Yup, I seem to have no luck with memory. This is the second bad set in a year. I purchased a 2GB Mushkin kit (2x1GB, DDR500) 5 months ago and now a stick is shot. World of Warcraft started crashing like a mofo last night, along with blue screens. This morning the PC barely booted up, and WoW would not start, period. I couldn't even get the installation to run until I ran MemTest to find the bad stick and pull it. I'm down to 1GB, how disappointing 
And to top it off DDR prices are on the up and up??
And to top it off DDR prices are on the up and up??