Are you using a vendor kernel on this system? If you are, then try a stock kernel and se what happens. It may be that patches added to the vendor kernel put out by SuSE could be fUx0r|nG the NVIDIA drivers in some obscure fashion.
If it still doesn't work with a stock kernel, use Ctrl-Alt-Backspace to kill the X server (if possible), and capture the output of the dmesg command. Then post it here.
/me \/\/@|\|t5 $$$$$ F0r @|\| u65r 3|33t G@/\/\1|\|G r1G
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