User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8 Build Identifier: 2.0.0.21 (20090302) When I do double click in shortcut of Thunderbird in quick launch bar, open more than one window of the thunderbird (2 process). With that when it receive email the system corrupt the data file of emails. Reproducible: Always Steps to Reproduce: 1.Double Click in shortcut of the Thunderbird in quick launch bar 2.Receive email 3. Actual Results: Corrupt the data file mail Expected Results: Not to create two simultaneous processes

so you are saying that thunderbird is not dying properly and when you launch it again you get an error message that thunderbird is already running ?

From private email : >I don't receive error message, only that the email folder is being processed. >If the user he doesn't notice that the thunderbird was opened twice, it can >cause a crash in data file email.

I've seen this happen with TB or FF. You can probably find a bug I've commented in about it.

Rodrigo, did you get a crash report? not the same issue, but to get this on the record - just now I didn't create two tasks, but it did open 2 3panes. (one instance, two windows)

I don't have the crash report, because this error doesn't create. I've the a big inbox file, 3GB. When I open 2 simultaneous windows of TB and receive a email, this can crash the data mail file, because I've 2 different process trying write in the same file. I think that the TB never can open two different windows.

To fix the data mail file, I made a simple program to write in inbox file "X-Mozilla-Status: 0000", and I delete the index (inbox.msf)

Rodrigo, so you know what a talkback crash report is, and the crash isn't triggering talback? http://kb.mozillazine.org/Mozilla_Suite_:_FAQs_:_Talkback#Getting_an_incident_ID Can you reproduce just as easily with thunderbird 3 beta? (backup your profile before using) http://en-us.www.mozillamessaging.com/en-US/thunderbird/early_releases/ (In reply to comment #3) > I've seen this [multiple instances on startup] happen with TB or FF. You can probably find a bug I've commented the comment is in bug 349858 leaving this open to track down the crash issue

no response, so closing. please reopen if you can recreate the crash with stack. if you can't get a stack using version 2, please try the current beta http://www.mozillamessaging.com/en-US/thunderbird/early_releases/ backup your profile before using