I've only experienced this same freeze just today. I've got evolution 2.4.2.1-1, so it's been running fine for two months now since January. The lockup now occurs, I think I can identify a specific email that came in today which triggered it. The message is on an IMAP server so the message above about IMAP security connections (using ssl ALWAYS not WHEN POSSIBLE) is probably relevent. But I can't get into evolution to change my settings now!
"killall evolution-data-server-1.4" does not fix it. The symptoms are the same as reported above, with (evolution:27732): Gdk-CRITICAL **: gdk_gc_set_foreground: assertion GDK_IS_GC (gc)' failed *** glibc detected *** free(): invalid pointer: 0x086ca320 *** Drew -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]