Firefox is SO SLOW, even IE is faster

[GLmaestro]

A week ago I noticed that everything loads very slowly when im browsing using Firefox (v 2.0). Youtube videos take forever to load, and the same goes for heavy pages with lots of pictures.

I thought something was wrong with my ISP, but I just tried Internet Explorer and everything is so much smoother. I tried loading the same youtube video on both FF and IE, and the difference is huge.

Also, i tried downloading Firefoc v1.5 but nothing changes.

Anyone who can help?

Thanks in advance!