Another belt squeaking problem

[2gGSX]

Almost every time I take the car past 5k RPM then go idle, there will be a loud squeaking noise coming from the engine bay. It seems to slowly get louder and louder until I get piss scared and just turn the car off. After a while (about 2-3 hours, a movie or two) I go back and it'll be fine.

Well this happened again today, so I tried to figure out what it is. It seems to be coming from a belt behind the engine, and my guess is that it's a pulley or something.

I understand this is a pretty vague question, but has anyone else had something like this? It'd be nice to narrow down what's wrong instead of checking every tensioner and every pulley (that and I haven't had any experience with this area)

 

[luv2rallye]

Make sure the harmonic balancer (crank pulley) isn't separating. Then check/adjust tension on all belts.