If I switch to virtual console from X pressing ctrl-alt-f1 and then switch back to X pressing alt-f7, X screen is smashed. The only way to revive X is to kill X-server and start it again. The same trouble I had with self-built XFree86-4, looks like r128 driver is poor. While XF86_SVGA from 3.3.6 performs really great. And it supports DGA, while xfree-4 - doesn't support.
The switch to/from VC problem is fixed in the -0.29 XFree86 package.