Dual celery story:
Me being around 14, not allowed to build my own PC, but I got to spec it, I ordered dual CPU's.
The company put in a dual slot 1 motherboard, and then two celerons in slot1 adapters.. that didn't support SMP.
After complaining for a while, they traded the two celerons and adapters for a single P3 (I think I was being had). It took a year or two before I was able to afford the second P3.
I still hold a grudge towards that particular computer shop, or I would, hadn't they gone out of biz.
I did run a lot of SETI@home on that P3, it earned me my first two certificates :D