Is it the majority having problems and the few working okay? Or the reverse?
I don't see hundreds of complaints, although there are thousands of users. It's normal for those not having problems to not post.

Would be great if no one had problems and i do feel for those of you who do have bad ones - i've been there too - in fact, as a PC Consultant (and web developer/marketer) i deal with PC problems constantly.

Anyway, my system specs:
I assembled it 2 years ago from:
Intel D915GAG motherboard
Intel P-4 3.0 GHz
2GB Ram
BFG GeForce 7950 GT OC display card with 256MB video RAM
2 - 120GB Seagate SATA drives 
SoundBlaster X-Fi audio card
300 Watt power supply
3 Extra fans
Windows XP Pro, SP-2

I maintain it with:
PCTools Registry Mechanic
Trend Micro PC-Cillin anti-virus
Diskeeper
PCTools Spyware Doctor
Norton Save & Restor backups

Custom settings:
Windows cache (hard drive virtual memory), display 3D settings