Since linux-bugs@nvidia doesn’t work I decided to post it here.
All previous versions works just fine for my ASUS 7100 (GeForce2MX) and latest disallow me switching from X to console. More interesting that after few minutes after X started it is possible to switch to text. After hour or more it is not. System is not hang or lockup. It just doesn’t switch to text (well, it switches from X but not in text mode - all graphic stuff is always on display, but not updated). Switching in X isn’t possible after this, but killing X server is solution.