Weird internet script viewing problem.. Please help

Lately I have been unable to view certain sites, or just certain pages off of sites. Whenever I access one of these websites via my web-browser (i've tried this with safari, firefox, and chrome), I end up viewing the page in what you would call "no style". I've tried to run firefox on safe mode, and I still encounter the problem. I've ran Clam once but it did not catch any viruses. Could I have one? Is this just an odd setting problem? Or is this a bug in my OS?

also, I'm completely unable to view apple.com. I can view their store.apple site, but nothing else related. I've subsequently been able to do this fine on other computers. Thanks for the help

The whole idea of virus' is a Windows idea - designed to make you run out and buy some east european company's software. Not knocking ClamAV, but it only finds Windows virus'.
There has been only one successful exploit - the DNS changer. Get this remover:
DNSChanger Removal Tool for Mac - Free software downloads and software reviews - CNET Download.com

Then also get Onyx and use it to clean caches:
Titanium's Software • Download

Does that help?

Do we have another user of Peer Guardian?

Are you connecting to Internet that could be restricting access to certain websites? For example, are you connecting from work, school, library, etc.