Hi Brandon! Welcome to Techsurvivors!!
I'm sure you'll get some answers here soon--but I have a few questions that might help us figure out what's going on? Can you tell us which version of Jaguar are you running? (Have you done any of the updates--such as going to OSX.2.4, X.2..5, etc.?) Also, how much memory do you have?
One thing that comes to mind right away--when you installed Jaguar, did you repair the permissions using disk utility? It's a good idea to do this after
any upgrade, installation, etc. To do this, open up the "Disk Utility" program that Jaguar installed. (It's probably in your applications folder->utilities folder.) Select the OS X volume, and click on the first aid tab at the top of the screen. Then, at the bottom of your screen, click "Repair Disk Permissions". This should help at least a little--and maybe a lot. The repair can take a little time, so relax for a few minutes until it's done.
Write back with the other information and let us know if the "repair permissions" helped.
EDIT: Ok, so KPS beat me to it by about 2 minutes about the RAM question. Still, repair the permissions--and then do whatever KPS suggests--he's "da man" when it comes to Jaguar!