Yeah, I was trying Nexuiz with the new s3g driver from S3 Graphics for their PCIe chips under OpenSUSE 10.2 and when I try to start a game or a timedemo, the screen goes black and nothing further happens. When I start with the -safe parameter, the game works fine so far.
So I guess, there's one extension causing the problem. What extensions or options are disabled with -safe? I guess you can disabled this things with the configuration file, too? So I would test step by step to identify the problem... It's important for bug reporting to S3 Graphics.