MacProblems

I have a refurbished Mac Book Pro that's causing me grief. Occasionally after long periods of uptime (interspersed with hibernation in the night), I see the following

= Symptoms =

• Random crashes of Finder, Firefox, iTunes
• Clicks in songs in iTunes, youtube, etc
• Kernel panics (none lately)
• Complete system hangs running any 3D games
• Weird consistent Console crash, trying to view a log!

I strongly suspect corrupted ram, but I'm not 100% sure.