so uh for the past few days my computer's been sketchy about displaying websites. youtube, google, and anything hosted on photobucket (as well as the site itself) are completely blocked off. the browser pretends it's loading, but doesn't make any progress. I have made attempts on both Firefox 3.5, where I first noticed the problem, and Internet Explorer 8 (I think,) which was able to display three pages on youtube before jamming up indefinitely like Firefox. I've just today scanned my computer with (ugh) AVG, coming up with a relatively clean bill of health. what's the matter?