5.1 released yesterday!
List of Fixes:
http://www.ati.com/support/includes/titles/fixed.html
Release notes:
http://www2.ati.com/drivers/Catalyst_51_release_notes.html
Download:
http://www.ati.com
This release fixed my cad program finally! Previous to this I had to disable Direct X to get performance. Not game tested by me yet, look to the forums in a day or 2 for any possible problems if your hesitant on trying this one out.