[SOLVED] SU password failure [debian]!!

[Neilrw]

Hi there,
For some unkown reason my su password is getting rejected. it is the right password, there are no ssh conections or anything. I get authentication failure.
tried sudo su, but my user is not a 'sudoer'.
Tried to look at /var/log/syslog but authentication needed so no help as to why this happened.

Any help would be great. plus an explanation would also help.

tried exec sudo su, and after entering a correct password it just kicks me out of terminal

[rokytnji]

Try This Maybe.

[Neilrw]

Thanks for that. Trying to boot into single user from grub and it kicks me into the gnome-login gui.
Same when i make a boot: Linux init=/bin/bash option
Any Idea's?

[Neilrw]

Hi there,
got it fixed by using recoverycd and mounting then chroot-ing.
After getting back in and looking at auth log I can see I got hacked on my ssh, using a PAM exploit.
oh well guess my fault for leaving it open. the computers only been up a week so no real data to steal, the guy just got a good look at my coursework - poor sod!