Kmail locks up on smime mail

SuSE 9.2 on an AMD64 box. Kmail is locking up tight anytime I try to open a piece of mail that is signed with smime. I've tried disabling the smime crypto backend in the security settings of Kmail, but it made no difference. Anyone have any pointers on where to look next. Googling didn't turn up anything useful that I could see. Scott -- POPFile, the OpenSource EMail Classifier http://popfile.sourceforge.net/ Linux 2.6.8-24.10-default x86_64