Problems starting KDE, X

hi,

I recently tried installling xlibs/experimental from opendoorsoftware.com

It didnt work, particularly, the virtual teminals stopped working and 
just showed up flickering garbage.

Then I tried to apt-get the old version of xlibs and all the kde stuff.
(I had removed the opendoorsoftware and other experimental repositories 
from /etc/apt/sources.list)
This was going smoothly until kdm had to restart, at which point, it 
give a message "Restart KDM? you can say no and restart later y/n" or 
something along those lines. At this point, I had the option of saying n 
(which appears not to work for some strange reason - I had to Ctrl-D the 
process because typing n had no effect. I tried apt-get various times)
The other alternative was y, which meant that i was thrown back to an 
unusable virtual terminal as described above.

I chose to stop kdm. Then my screen was unusable so i figured i could 
wait till hard disk stopped spinning and press Ctrl alt del to restart.

Anyway now kde wont run I get this error message (from /var/log/XFree86.log)


Data incomplete in file /etc/X11/XF86Config-4 Undefined INputDevice 
'configured MOuose' referenced by ServerLayout 'Default Layout'

Has XF86Config-4 been overriden or something? I cant figure it out.

thanks