Today I installed some updates and some of them had to do with Xserver. Now as soon as I see the desktop when I boot, gnome warns that another session is already running - closing down, and I cant get in no matter what alternative I chose (except failsafe terminal) Luckily I still have XP so I can cry out for help.
I'll try again and see if reconfigure xserver does any good.
Nothing was changed except the updates when log in to gnome failed.
It was solved by removing beryl in recovery mode - I enabled beryl forgetting that I used the "vesa" driver
I think beryl has brought with it some problems making the computer somewhat unstable so I considered removing anyway.
After that I reconfigured xserver to use vesa (a second time) and as soon as I could use the desktop I opened a terminal and uninstalled and installed the nvidia driver.
Everything is back - I can even start the "Nvida Settings" under "System Tools" - beryl broke that.
Beryl has to become more developed (the version is only 0.2 something if I remember correctly) before I try it again.
One lesson is learned from this - do remember some essential commands (like dpkg -r) and/or have a dual boot so you can look them up, I remembered