Similar thing happened to me today. I have an old G5 running a Kona 2
on 10.4.11. It’s still running fine on 6.0.2, but things got messy when I tried
installing 6.0.3. The card wasn’t detected etc… I uninstalled 6.0.3, re-installed
6.0.2, restarted the computer each times and repaired permissions. It’s now
running fine again… on 6.0.2.
I guess the forgot to run tests on the K2 B4 releasing the new driver…
Pierre Tremblay