I wanted to upgrade my system aroud the holidays but I found myself running low on cash. I decided to upgrade the stuff that was critical, and wait until I had the funds before I did a full upgrade. I bought a a new vid card, HD, and a stick of 512mb pc3200 ram. I'm running a kt266a chipset board, so I know it doesn't support speeds of over pc2700, but I figured the ram would automatically run underclocked. When I tried running it, the system became unstable. In a casual conversation with one of the pc people at best buy, i was told that I was lucky that I didn't ruin the mobo, and running ram that high at low speeds was bad for both the ram and the mobo. Im wondering if I just got a defective stick, or if I need to put the ram in a different slot (was running it in the third slot instead of the first). Ive heard that mixing ram in any case can be a bad idea. So what gives? Should I try running the ram again? Can i damage my motherboard?was the best buy guy talkin out his ass?