Apple exchanges defective MacPro ATI X1900 graphics cards

[Thomas Holm]

There have been a number of graphic display issues on MacOSX computers over the years. This time, it may not be your fault!
Apple has announced that they're exchanging for free certain ATI X1900 XT cards, sold in some Mac Pro machines during 2006 - 2008.

Check this out:
http://support.apple.com/kb/ts3420