Problems after adding a second server

[dsg@mitre.org (David S. Goldberg)]

I've been using a Cyrus server.  The company recently began supporting
a Netscape server.  I have accounts on both so I set up the Netscape
server as a secondary select mechanism, ran gnus and subscribed to the
INBOX.  Groups in both servers are at level 2.  Periodically, I get an
error "this shouldn't happen", except that I can't tell what "this"
is.  Attached is a backtrace, and the last bits of *nnimap-debug* and
*imap-log*.  For now I've just unsubscribed the netscape group because
I'm not really using it.  Any help appreciated.

 
Signaling: (error "this shouldn't happen")
  signal(error ("this shouldn't happen"))
  cerror("this shouldn't happen")
  apply(cerror "this shouldn't happen")
  error("this shouldn't happen")
  ad-Orig-nnimap-open-server("mailsrv1" nil)
  nnimap-open-server("mailsrv1")
  ad-Orig-nnimap-possibly-change-server("mailsrv1")
  nnimap-possibly-change-server("mailsrv1")
  ad-Orig-nnimap-split-articles("INBOX" "mailsrv1")
  nnimap-split-articles("INBOX" "mailsrv1")
  ad-Orig-nnimap-request-scan("INBOX" "mailsrv1")
  nnimap-request-scan("INBOX" "mailsrv1")
  gnus-request-scan("nnimap+mailsrv1:INBOX" (nnimap "mailsrv1" (nnimap-server-address "mailsrv1.mitre.org") (nnimap-server-port 143)))
  gnus-activate-group("nnimap+mailsrv1:INBOX" scan)
  gnus-get-unread-articles(2)
  gnus-group-get-new-news(nil)
  call-interactively(gnus-group-get-new-news)

1 -> nnimap-close-group: group="INBOX.private" server="linus"
| 2 -> nnimap-possibly-change-group: group="INBOX.private" server="linus"
| | 3 -> nnimap-possibly-change-server: server="linus"
| | | 4 -> nnimap-open-server: server="linus" defs=nil
| | | | 5 -> nnimap-server-opened: server="linus"
| | | | 5 <- nnimap-server-opened: (open run)
| | | 4 <- nnimap-open-server: t
| | 3 <- nnimap-possibly-change-server: t
| 2 <- nnimap-possibly-change-group: "INBOX.private"
| 2 -> nnimap-expunge-close-group: server="linus"
| | 3 -> nnimap-possibly-change-server: server="linus"
| | | 4 -> nnimap-open-server: server="linus" defs=nil
| | | | 5 -> nnimap-server-opened: server="linus"
| | | | 5 <- nnimap-server-opened: (open run)
| | | 4 <- nnimap-open-server: t
| | 3 <- nnimap-possibly-change-server: t
| 2 <- nnimap-expunge-close-group: t
1 <- nnimap-close-group: t
======================================================================
1 -> nnimap-server-opened: server="mailsrv1"
1 <- nnimap-server-opened: (open run)
======================================================================
1 -> nnimap-request-scan: group="INBOX" server="mailsrv1"
| 2 -> nnimap-split-articles: group="INBOX" server="mailsrv1"
| | 3 -> nnimap-possibly-change-server: server="mailsrv1"
| | | 4 -> nnimap-open-server: server="mailsrv1" defs=nil
| | | | 5 -> nnimap-server-opened: server="mailsrv1"
| | | | 5 <- nnimap-server-opened: (open run)

* OK Netscape IMAP4rev1 Service 3.6 on mailsrv1.mitre.org at Wed, 13 Jan 1999 10:15:10 -0500 (EST)
355 LOGIN "dsg" "<password deleted>"
355 OK LOGIN completed
356 SELECT INBOX
* 1 EXISTS
* OK [UIDVALIDITY 915744707] UID validity status
* FLAGS (\Answered \Flagged \Deleted \Draft \Seen)
* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Draft \Seen)] Permanent flags
* 0 RECENT
356 OK [READ-WRITE] SELECT completed
357 UID SEARCH UNSEEN
* SEARCH
357 OK UID SEARCH completed
358 CLOSE
358 OK No messages deleted, so no update needed
* OK linus Cyrus IMAP4 v1.5.10 server ready
1080 LOGIN "dsg" "<password deleted>"
1080 OK User logged in
1081 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1081 OK [READ-WRITE] Completed
1082 UID SEARCH UNSEEN
* SEARCH
1082 OK Completed
1083 CLOSE
1083 OK Completed
1084 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1084 OK [READ-WRITE] Completed
1085 UID SEARCH UNSEEN
* SEARCH
1085 OK Completed
1086 CLOSE
1086 OK Completed
1087 SELECT INBOX.gnus-imap
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-dormant gnus-expire gnus-save)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-dormant gnus-expire gnus-save \*)] 
* 10 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 903716674] 
1087 OK [READ-WRITE] Completed
1088 UID SEARCH UNSEEN UNDELETED
* SEARCH
1088 OK Completed
1089 UID SEARCH SEEN
* SEARCH 393 394 395 397 398 399 400 401 402 403
1089 OK Completed
1090 UID SEARCH FLAGGED
* SEARCH
1090 OK Completed
1091 UID SEARCH ANSWERED
* SEARCH
1091 OK Completed
1092 UID SEARCH KEYWORD gnus-expire
* SEARCH
1092 OK Completed
1093 UID SEARCH KEYWORD gnus-dormant
* SEARCH
1093 OK Completed
1094 UID SEARCH KEYWORD gnus-save
* SEARCH
1094 OK Completed
1095 FETCH 1,* (UID)
* 1 FETCH (UID 393)
* 10 FETCH (UID 403)
1095 OK Completed
1096 CLOSE
1096 OK Completed
1097 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1097 OK [READ-WRITE] Completed
1098 UID SEARCH UNSEEN
* SEARCH
1098 OK Completed
1099 CLOSE
1099 OK Completed
1100 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1100 OK [READ-WRITE] Completed
1101 UID SEARCH UNSEEN UNDELETED
* SEARCH
1101 OK Completed
1102 UID SEARCH SEEN
* SEARCH
1102 OK Completed
1103 UID SEARCH FLAGGED
* SEARCH
1103 OK Completed
1104 UID SEARCH ANSWERED
* SEARCH
1104 OK Completed
1105 UID SEARCH KEYWORD gnus-expire
* SEARCH
1105 OK Completed
1106 UID SEARCH KEYWORD gnus-killed
* SEARCH
1106 OK Completed
1107 UID SEARCH KEYWORD gnus-cache
* SEARCH
1107 OK Completed
1108 CLOSE
1108 OK Completed
1109 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1109 OK [READ-WRITE] Completed
1110 UID SEARCH UNSEEN
* SEARCH
1110 OK Completed
1111 CLOSE
1111 OK Completed
1112 SELECT INBOX.private
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 903714442] 
1112 OK [READ-WRITE] Completed
1113 UID SEARCH UNSEEN UNDELETED
* SEARCH
1113 OK Completed
1114 UID SEARCH SEEN
* SEARCH
1114 OK Completed
1115 UID SEARCH FLAGGED
* SEARCH
1115 OK Completed
1116 UID SEARCH ANSWERED
* SEARCH
1116 OK Completed
1117 UID SEARCH KEYWORD gnus-expire
* SEARCH
1117 OK Completed
1118 UID SEARCH KEYWORD gnus-killed
* SEARCH
1118 OK Completed
1119 UID SEARCH KEYWORD gnus-cache
* SEARCH
1119 OK Completed
1120 CLOSE
1120 OK Completed
1121 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1121 OK [READ-WRITE] Completed
1122 UID SEARCH UNSEEN
* SEARCH
1122 OK Completed
1123 CLOSE
1123 OK Completed
1124 SELECT INBOX.gnus-imap
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-dormant gnus-expire gnus-save)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-dormant gnus-expire gnus-save \*)] 
* 10 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 903716674] 
1124 OK [READ-WRITE] Completed
1125 UID SEARCH UNSEEN UNDELETED
* SEARCH
1125 OK Completed
1126 UID SEARCH SEEN
* SEARCH 393 394 395 397 398 399 400 401 402 403
1126 OK Completed
1127 UID SEARCH FLAGGED
* SEARCH
1127 OK Completed
1128 UID SEARCH ANSWERED
* SEARCH
1128 OK Completed
1129 UID SEARCH KEYWORD gnus-expire
* SEARCH
1129 OK Completed
1130 UID SEARCH KEYWORD gnus-dormant
* SEARCH
1130 OK Completed
1131 UID SEARCH KEYWORD gnus-save
* SEARCH
1131 OK Completed
1132 FETCH 1,* (UID)
* 1 FETCH (UID 393)
* 10 FETCH (UID 403)
1132 OK Completed
1133 CLOSE
1133 OK Completed
1134 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1134 OK [READ-WRITE] Completed
1135 UID SEARCH UNSEEN
* SEARCH
1135 OK Completed
1136 CLOSE
1136 OK Completed
1137 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1137 OK [READ-WRITE] Completed
1138 UID SEARCH UNSEEN UNDELETED
* SEARCH
1138 OK Completed
1139 UID SEARCH SEEN
* SEARCH
1139 OK Completed
1140 UID SEARCH FLAGGED
* SEARCH
1140 OK Completed
1141 UID SEARCH ANSWERED
* SEARCH
1141 OK Completed
1142 UID SEARCH KEYWORD gnus-expire
* SEARCH
1142 OK Completed
1143 UID SEARCH KEYWORD gnus-killed
* SEARCH
1143 OK Completed
1144 UID SEARCH KEYWORD gnus-cache
* SEARCH
1144 OK Completed
1145 CLOSE
1145 OK Completed
1146 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1146 OK [READ-WRITE] Completed
1147 UID SEARCH UNSEEN
* SEARCH
1147 OK Completed
1148 CLOSE
1148 OK Completed
1149 SELECT INBOX.private
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 903714442] 
1149 OK [READ-WRITE] Completed
1150 UID SEARCH UNSEEN UNDELETED
* SEARCH
1150 OK Completed
1151 UID SEARCH SEEN
* SEARCH
1151 OK Completed
1152 UID SEARCH FLAGGED
* SEARCH
1152 OK Completed
1153 UID SEARCH ANSWERED
* SEARCH
1153 OK Completed
1154 UID SEARCH KEYWORD gnus-expire
* SEARCH
1154 OK Completed
1155 UID SEARCH KEYWORD gnus-killed
* SEARCH
1155 OK Completed
1156 UID SEARCH KEYWORD gnus-cache
* SEARCH
1156 OK Completed
1157 CLOSE
1157 OK Completed
1158 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1158 OK [READ-WRITE] Completed
1159 UID SEARCH UNSEEN
* SEARCH
1159 OK Completed
1160 CLOSE
1160 OK Completed
1161 SELECT INBOX.gnus-imap
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-dormant gnus-expire gnus-save)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-dormant gnus-expire gnus-save \*)] 
* 10 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 903716674] 
1161 OK [READ-WRITE] Completed
1162 UID SEARCH UNSEEN UNDELETED
* SEARCH
1162 OK Completed
1163 UID SEARCH SEEN
* SEARCH 393 394 395 397 398 399 400 401 402 403
1163 OK Completed
1164 UID SEARCH FLAGGED
* SEARCH
1164 OK Completed
1165 UID SEARCH ANSWERED
* SEARCH
1165 OK Completed
1166 UID SEARCH KEYWORD gnus-expire
* SEARCH
1166 OK Completed
1167 UID SEARCH KEYWORD gnus-dormant
* SEARCH
1167 OK Completed
1168 UID SEARCH KEYWORD gnus-save
* SEARCH
1168 OK Completed
1169 FETCH 1,* (UID)
* 1 FETCH (UID 393)
* 10 FETCH (UID 403)
1169 OK Completed
1170 CLOSE
1170 OK Completed
1171 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1171 OK [READ-WRITE] Completed
1172 UID SEARCH UNSEEN
* SEARCH
1172 OK Completed
1173 CLOSE
1173 OK Completed
1174 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1174 OK [READ-WRITE] Completed
1175 UID SEARCH UNSEEN UNDELETED
* SEARCH
1175 OK Completed
1176 UID SEARCH SEEN
* SEARCH
1176 OK Completed
1177 UID SEARCH FLAGGED
* SEARCH
1177 OK Completed
1178 UID SEARCH ANSWERED
* SEARCH
1178 OK Completed
1179 UID SEARCH KEYWORD gnus-expire
* SEARCH
1179 OK Completed
1180 UID SEARCH KEYWORD gnus-killed
* SEARCH
1180 OK Completed
1181 UID SEARCH KEYWORD gnus-cache
* SEARCH
1181 OK Completed
1182 CLOSE
1182 OK Completed
1183 SELECT INBOX
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 896738447] 
1183 OK [READ-WRITE] Completed
1184 UID SEARCH UNSEEN
* SEARCH
1184 OK Completed
1185 CLOSE
1185 OK Completed
1186 SELECT INBOX.private
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen gnus-cache gnus-expire gnus-killed \*)] 
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 903714442] 
1186 OK [READ-WRITE] Completed
1187 UID SEARCH UNSEEN UNDELETED
* SEARCH
1187 OK Completed
1188 UID SEARCH SEEN
* SEARCH
1188 OK Completed
1189 UID SEARCH FLAGGED
* SEARCH
1189 OK Completed
1190 UID SEARCH ANSWERED
* SEARCH
1190 OK Completed
1191 UID SEARCH KEYWORD gnus-expire
* SEARCH
1191 OK Completed
1192 UID SEARCH KEYWORD gnus-killed
* SEARCH
1192 OK Completed
1193 UID SEARCH KEYWORD gnus-cache
* SEARCH
1193 OK Completed
1194 CLOSE
1194 OK Completed

-- 
Dave Goldberg
Post: The Mitre Corporation\MS B305\202 Burlington Rd.\Bedford, MA 01730
Phone: 781-271-3887
Email: dsg@mitre.org