User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) Opera 7.50 [en] Build Identifier: Thunderbird version 0.7.2 (20040707) When Thunderbird is running for a long time hours/days it eventually looses the network connection. I see three different effects when this happens: 1) Clicking on 'Get Mail' gives no reaction at all 2) If I'm writing a mail and want to send it I get a server timeout 3) Connecting to a news server times out Just stopping and starting Thunderbird cures the problem. I have observed this behaviour since version 0.5. Reproducible: Always Steps to Reproduce: 1. Start Thunderbird 2. Work on other stuff and keep it running for hours 3. Work with Thunderbird and find it no longer connects to its servers Actual Results: The network connection was lost Expected Results: Just keep connecting What can I do to help pinpint the problem (switch on debug logs, etc) ?

I've left the machine running since the bug submission yesterday and TB is now in its broken state. - When I click on 'Get mail' nothing happens (it is supposed to connect to my mail server and fetch new mail) - When I send a mail the send mail window just hangs looking up the domain name of the mail server - When I want to read news TB attempts to connect (see status line) but just sits there forever I attach screen shots of my actions (send mail, including the popups when I cancel the message, open the news server)

I believe this may be a duplicate of Bug 227617.

I just hat a look at 227617 and it looks indeed very similar.

*** This bug has been marked as a duplicate of 173924 ***