Thanks guys, I appreciate all of the suggestions.
Too all you MAC haters. I'll have had this MAC for 4 years this September and this is my first issue with it. I've never had any other hardware issues, never had a virus or any spyware (I've never even had an antivirus/spyware program installed), never had to reformat the hard drive and my computer still runs like it did the day I bought it. (minus the fan).
I can't say the same for any of my previous Winblowz PC's!
Cheers!