Yep, or early 7900GT's teething problems?
Listen what I tried today.
I got another PC in my home, a AMD 3700+, with MSI Neo-FI M/B (NF4-U), 2x512MB OCZ, 2 Seagates 200GB's and use the 480W Tagan PSU with 24pins etc,etc
This machine used to have a 7600GT, so I just swapped the XFX 7900GT...