When doing a few drag/drop of folder from one account (local or imap) to an imap account, i've been getting a few crashes. What happens is I drag a medium-size folder, then try to drag another one while it's still transferring - the server says something about an invalid header, and then i crash. bp-b07a5707-8d38-11dd-886b-001a4bd43ed6 bp-e2237387-8d37-11dd-9d95-001cc4e2bf68 libxpcom_core.so libxpcom_core.so@0x220d2 1 thunderbird-bin nsImapMailCopyState::~nsImapMailCopyState nsCOMPtr.h:484 2 thunderbird-bin nsImapMailCopyState::Release nsImapMailFolder.cpp:7146 3 libxpcom_core.so libxpcom_core.so@0x28c47 4 libxpcom_core.so libxpcom_core.so@0x58bef 5 libxpcom_core.so libxpcom_core.so@0x27342 6 thunderbird-bin nsBaseAppShell::Run widget/src/xpwidgets/nsBaseAppShell.cpp:170 7 thunderbird-bin nsAppStartup::Run toolkit/components/startup/src/nsAppStartup.cpp:182 8 thunderbird-bin XRE_main toolkit/xre/nsAppRunner.cpp:3265 9 thunderbird-bin main nsMailApp.cpp:103 10 libc-2.7.so libc-2.7.so@0x1644f The line in nsImapMailFolder.cpp is NS_IMPL_THREADSAFE_ISUPPORTS1(nsImapMailCopyState, nsImapMailCopyState)

magnus, can you still reproduce? sounds likely to be a dupe of one of the, interruptus imap transfer bugs. (though I'm not finding any that include nsImapMailCopyState in the bug comments)

Unfortunately yes - just crashed with bp-606518ea-030a-4f3f-a684-e36c42090121 for the same str. 0 libxpcom_core.so nsCOMPtr_base::~nsCOMPtr_base nsCOMPtr.cpp:81 1 thunderbird-bin nsImapMailCopyState::~nsImapMailCopyState nsCOMPtr.h:469 2 thunderbird-bin nsImapMailCopyState::Release nsImapMailFolder.cpp:7225 3 libxpcom_core.so nsProxyReleaseEvent::Run nsProxyRelease.cpp:52 4 libxpcom_core.so nsThread::ProcessNextEvent xpcom/threads/nsThread.cpp:510 5 libxpcom_core.so NS_ProcessNextEvent_P nsThreadUtils.cpp:227 6 thunderbird-bin nsBaseAppShell::Run widget/src/xpwidgets/nsBaseAppShell.cpp:170 7 thunderbird-bin nsAppStartup::Run toolkit/components/startup/src/nsAppStartup.cpp:192 8 thunderbird-bin XRE_main toolkit/xre/nsAppRunner.cpp:3279 9 thunderbird-bin main nsMailApp.cpp:103 10 libc-2.8.90.so libc-2.8.90.so@0x16684

magnus, joe, eddy can you reproduce this with version 3.1.2? xref bug 487288 and bug 531568