Are these signs of bad memory?
I have three 256mb sticks in my PC, amounting to 768mb total, should be enough to run XP (not a gamer...), but I fear it may be bad, here's why:
Various programs freeze (Winamp especially) all the time
Sometimes if I go to the "System" option in the Control Panel it says 640mb instead of 768
And upon running Memtest my PC froze after one minute and restarted itself
The ram is compatible with my PC, it's PC133 SDRAM. So, what do you think?

I ran Memtest86 off a bottable floppy for about 40mins, it found 88064 errors....I assume that's bad...