I have built 2 systems with the below board in the last 8 months I guess. The only problem I had with it was Linux couldn't talk to the sensors, so Linux couldn't control the fan speeds or read the temp. Other than that, both systems worked perfectly on Linux. I would suggest a Nvidia 8600 series graphics card. Good performance/price ratio.
ASUS M2N32-SLI Deluxe Wireless Edition
Insanity: Doing the same thing over and over and each time expecting a different result.
Democracy is 2 wolves and a lamb voting on the menu. Liberty is an armed lamb protesting the electoral outcome. A Republic negates the need for an armed protest.