It's over 24 hours now since the fglrx 8.42.3 download link first surfaced and we shared the great news with you that 8.42 delivers on AIGLX and other improvements. However, the AMD website still hasn't been updated for this new Linux driver.
can someone explain this line to me?
"Products older than Radeon™ HD 2x00 are now supported after being enabled only for testing in 8.41.7"
They've got means for turning off the checks for what chip you're trying to run their driver with- and they turned it off and did testing against the driver in their QA group for those non R600 chips. 8.42, according to them, passed muster. With the threads going on in these forums and elsewhere on the subject of problems with installation, stability, and rendering quality, I doubt they actually did pass muster.