KDM doesn't start

[alexander syring <alex@asyring.homeip.net>]

Hi 
I've got a big problem yesterday I apt-get upgraded my system amd64 sid and 
now I can't log in as a normal user only as root.
Another problem is that joe doesn't work in /var/log/messages I found this

Nov 15 19:33:17 localhost kernel: kdm_greet[3101] trap divide error 
rip:2aaaab627cc6 rsp:7ffffffe5c990 error:0
Nov 15 19:34:43 localhost kernel: joe[3135] trap divide error rip:2aaaaae4acc6 
rsp:7fffffb29340 error:0

I have an 2.6.13.4 vanilla kernel with smp support

If other informations needed ask me

Thanks 
Alex

P.S. sorry for my bad english