A "heads up" notification: While the messages are gone, the driver may have some issues (I'm unsure whether it's really caused by the driver): 1) After login with GNOME the X server crashed and was unable to restart cleanly 2) ImageMagicks "display" showed an image transparent that wasn't transparent, and Firefox showed brown as green in some PNG image with a color profile. However both images displayed correctly in GIMP. I'll keep an eye on these issues.