In response, Nvidia has created a page where users can directly report any problems with Vista drivers.

It is also devoting heavy resources to fixing those drivers until "everyone is delighted," Vivoli said.

Games slow to level up

So when will Vista-optimized games arrive?

Besides driver problems, the lack of DirectX 10 video cards on the market so far has prevented game publishers from rushing to the new technology. Even Halo 2, Microsoft's massive hit for the Xbox that it is busily porting over for a release later this year on Windows Vista, will still be on XP's DirectX 9 technology. That is changing. Nvidia said it plans to have an entire "top-to-bottom" family of GeForce 8800 chips by the end of the year.