The same for me. It started to happen after upgrade from Feisty to Gutsy (i.e. to Thunderbird 2). It happens with POP3 as well as IMAP accounts -- when new message arrives the program freezes.
The same for me. It started to happen after upgrade from Feisty to Gutsy (i.e. to Thunderbird 2). It happens with POP3 as well as IMAP accounts -- when new message arrives the program freezes.