hi
i use knoppix 6.2 hd installed

i used command
apt-get -dist-upgrade -f

but it ended with "error processing ppp_xx.xx.x.deb" (i don't remember exact name it begins with ppp and followed by version numbers )
and after that network does not work any more , network monitor applet does not appear
and i am unable to set up network connection
next in the system settings there is no way to set up keyboard layout any more.
perhaps there are other things broken after apt-get -dist-upgrade -f ...
what i can do to make system working again ?

thanks best regards