RE: seamonkey win32 (1999-04-26-08) and Linux 2.0 (1999-04-26-08) steps: 1. Run apprunner 2. Launch mail app. from Tasks|Messenger 3. Select a message from the Inbox folder and click on the Delete button, application immediately crashes Occurs consistently on Linux and win_nt 4.0 Linux shell error msg is as follows: MsgDeleteMessage from XUL tree is valid Appcore isn't null in MsgDeleteMessage nsMsgAppCore::SetWindow(): Getting the webShell of interest... Segmentation fault (core dumped)

*** This bug has been marked as a duplicate of 5510 ***

marking verified as a duplicate (since Scott thinks so). Bug 5510 is a M5 stopper - when that bug gets marked fixed, we'll verify the case for message deletion as well.