User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 (Beta/Release) Build ID: 20130910160258 Steps to reproduce: Thunderbird running for several days. Actual results: Cannot move messages from an IMAP folder to some local folder. It seems, that before it's impossible to move messages, that the next message is printed several times in the error log: Zeitstempel: 07.10.2013 07:55:00 Fehler: 2013-10-07 07:55:00 gloda.index_msg ERROR Problem encountered during message move/copy: undefined Quelldatei: resource:///modules/gloda/log4moz.js Zeile: 688 When the error (of not be able of moving messages) occurs, then the above error message stops. I don't see any further messages. A restart of Thunderbird 24 is required. With Thunderbird 17 this bug was not there. Expected results: Moving of IMAP massages to local folders should be possible as days before.

The profile is huge (about 188 KB preferences, 20 IMAP/POP3 accounts, 1.25 GB profile directory, 658 MB local folders).

let's assume bug 989884