Originally Posted by altella
-If I update the Xorg system (the one in "updates" is newer), will the ATI driver (fglrx) continue running well or will I have to install it again?
The ATI linux proprietory driver builds a kernel module that the Xorg server uses at runtime. Yes you will most likely have to rebuild this kernel module, as you will be using a different version of the X server.
It shouldn't hurt to try to run X without re-installing the ATI driver. But I doubt the fglrx module will load properly in the new version of X.
Installing the ATI driver shouldn't be too much a problem. Just make sure you have your kernel sources installed, and that their version corresponds with the kernel you have.