Had the exact same issue as comment #11 including log spamming and can confirm that deleting the empty file 'global-messages-db.sqlite-journal' in my Thunderbird account folder resolved the issue.
This was under Ubuntu 12.04 with Thunderbird 14 and encrypted home directory.
Had the exact same issue as comment #11 including log spamming and can confirm that deleting the empty file 'global- messages- db.sqlite- journal' in my Thunderbird account folder resolved the issue.
This was under Ubuntu 12.04 with Thunderbird 14 and encrypted home directory.