Created attachment 1487 [details] backtrace after display freezes OS is Debian Jessie. Display (UI) freezes when trying to open or delete a message. Happens intermittantly, but some messages seem bad and the freeze often repeats on them. When miniminizing display and then re-displaying, the screen is gray. No response to close application. Can kill application, but it can't be reopened. On reboot command, the shutdown message appears to have a problem, but it goes so fast that I can't follow it. Followed instructions in Debugging Claws using gdb. Does not crash with a segmentation fault (see backtrace) but needs to be stopped with ^C. Backtrace attached.
How long do you wait before killing it? Show the --debug output without killing it. At this point I suspect a corrupted image attachment.
I kill it quite soon after it freezes. With the help of your comment, I waited about 10 min and it sorted itself out. I'll try a debug without killing it. Is ^C on the terminal the same as "kill" on right click? And yes, usually the bad email often (perhaps always) has some sort of image. But my wife's MSWindows 7 with another e-mail application seems to open the offending e-mails OK.
(In reply to comment #2) > And yes, usually the bad email often (perhaps always) has some sort of > image. But my wife's MSWindows 7 with another e-mail application seems to > open the offending e-mails OK. Your wife's email application is , no doubt, not reliant on libgdk-pixbuf, which it looks is where the bug resides.
Thank you for the analysis. That points me where to look. Thanks!