Why is my G5 running so slow and hot? We have an early 2005 Power Macintosh G5 2.0 DP (PCI). This tower has been having a lot of problems: freezing randomly, runs hot and slow, fans race intermittently, CDs/DVDs don't always load, won't go to sleep sometimes...
What is happening and how can I fix this??

Here are additional specs:

Dual 2GHz PowerPC G5 Processor 
2GB DDR SDRAM 
Runs OS 10.5.8

This is the model info for this tower: http://www.everymac.com/systems/apple/powermac_g5/stats/powermac_g5_2.0_dp_pci.html

Additional System Profiler info is here at:
http://inventaweb.net/matthew/sysprofiler.txt

I deleted the log files from the file because they are way too long, but everything else is there.
It may be time to get a new Mac Pro. The processing units in these machines often don't last forever. 

Otherwise, I would suggest backing up as many of your valuable files as you can, clearing your machine and reloading your OS from scratch (i.e. Install DVD).