User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.13) Gecko/2009080315 Ubuntu/9.04 (jaunty) Firefox/3.0.13 Build Identifier: 2.0.0.23 (20090817) Whenever I run out of diskspace, as soon as there is some space regained, Thunderbird starts to re-download all already downloaded messages from the POP3 servers. Once it starts it cannot be stopped until all messages are downloaded, which lasts quite a while with a few thousend messages. Reproducible: Always Steps to Reproduce: 1. Have Thunderbird runing all the time, check for new mail every 15 minutes 2. Completely fill up your disk (some download, file-extracting, ...) 3. Have some coffee or go for a walk to make sure the disk gets full and stays like that for a while. 4. When back at least the disk-space consuming application should have stopped with an "insufficient space" error, Nautilus also shows "Free space: 0b" 5. Delete some files to gain space 6. Wait till Thunderbird automatically checks for new messages Actual Results: All already downloaded messages from the POP3 servers are re-downloaded and end up as un-read messages (duplicates) Expected Results: Only new messages should be downloaded I'm using a 32GB SSD that's why I run out of disk-space from time to time. The error happens all the time even on fresh installed systems (Ubuntu 9.04). My .mozilla-thunderbird folder is about 2GB big, I'm using the standard Ubuntu installation (-> Applications -> Add/Remove). Following AddOns are installed: Get all mails 1.0.9 ImportExportTools (Mboximport enhanced) 2.2.3 Remove Duplicate Messages (Alternate) 0.3.2 Rikaichan 1.06 Japanese-German Dictionary for rikaichan 1.10

when this happens could locate the popstate.dat file and attach it to this bug ?

These are the 6 popstate.dat files I found. I edited them only to delete the login informations.

the popstate.dat file contains information about what has/hasn't been downloaded. If your disk is full the information can't be written - hence the issue you are seeing I think. David thoughts ?

Yeah, when the disk is full nothing can be written but the action (all the re-downloads) start as soon as there is space available again.

yes, we should probably be checking for diskspace available before trying to write out the new popstate.dat, or write out to a temp file, and if that's successful, rename it over the original.

Same happens on Windows XP 32, TB 2.0.0.23.

Same problem here on TB 2.0.0.23 (20090812) on Ubuntu 9.04. I think I've been having this problem ever since I've used Thunderbird. It's quite annoying if you sort mail into folders and have to run the Remove Duplicates add-on on all of them (even worse if you manually sort stuff, then you have to re-sort all duplicates as well!). Let me now if I can provide any further info to help fix this.

I have the same issue with Version 2.0.0.23 (20090812) on Mac OS X 10.5.7 And on any other system and version that i can remember ever since i am using Thunderbird - a solution would be really appreciated, thank you.

Apparently working in tb3 - bug 239455.