X (NVidia) fails after apt-get upgrade

[voidnecron]

Hi,

First of all, I couldn't find anything usefull in the search, but if I've overlooked something, please point it out.

For some stupid reason I ran apt-get update && apt-get upgrade in a terminal in X.
Obviously the upgrade couldnt upgrade the nvidia drivers, so I figured it would skip those. Apparently it didn't, and now my driverset seems out of sync with the kernel or something.

The exact error when X tries to start is:
FATAL: Module nvidia not found.
(EE) NVIDIA: Failed to load the NVIDIA kernel module. Please check you system's kernel log for additional error messages.
(EE) Failed to load module "nvidia" (module-specific error, 0)
(EE) No drivers available.

I've tried to run apt-get update and upgrade again, but it states there are no new packages.
What do I need to do to reinstall the nvidia drivers?

Thanks.

UPDATE: I've just uninstalled the Nvidia package via aptitude, afterwards apt-get dist-upgrade installed some nvidia driver part again. However, the NVidia package isn't listed in aptitude (under BackTrack-GPU).

X still doesnt start. Different error though:
(EE) No devices detected.
Fatal server error:
no screens found.