I dont know where else to go, I dont even know if this is the right place to post this kind of question, but here goes.
I have a home build system (isnt my first one, btw, all my computers are home build except my firsts ones, trs, apple 2, msx and amiga 500), no im not new in this world.
I run debian gnu/linux most of times, but windows xp for gaming.
Today I have a "good" setup fist my setup:
MoBo: Asus P5N-E Sli
CPU: Intel Core 2 Quad Q6600
RAM: 3x1GB DDR2 UDIMM Kingston PC2-6400
Video: Nvidia 8600gt and Nvidia 8500gt (not in sli mode).
Network: Dlink Wireless g510
Power source: 550w extreme
My Disks: ST3320620AS and ST3500320AS
My system im completely unstable, sometimes I run it for days (3/4) without any problem (i dont even turn off computer sometimes), but sometimes (very often), it hangs, on linux I can notice some SATA error, on windows sometimes it reports BSOD KERNEL_IOPAGE_SWITCH errors, when a error occurs it becomes frequent, and I have to turn off and try again later (next day), and the system starts ups and works some more time, until it happens again, and again.
My bad, isnt Extreme is Extream. Is a brazilian brand, btw isnt that poor quality chinese PSU, one of those costs here 15 US$ mine have cost something near 150 US$.
Here in brazil they are know as Good Quality, havent seen any bad review and as I was talking, im doing cpu stress tests here and no change in power supply is noticed, I will send the logs after 1 hour.