Unlegible Characters On Some Websites. Messed up Fonts!

[hysteryck]

I go to some websites, (such as wikipedia amongst other glitchy thing like someones reply on gmails) and the fonts on the site comes out unlegible! It comes out like fraction and words all on top of each other. I tried changing the Character Encodings under View but nothing is working. Its a drag not being able to read some sites. When I copy and paste it onto excel, the actual paragraph clearly appears but once back on the browser, its still messed up. I use Firefox 3.0.8 and Safari 3.1.2. Please give me any advices! Thanks in advance.

 

[cmaier]

heh heh. unlegibile.

 

[Sun Baked]

Validated fonts using Font Book.app? and disabled the problems yet, plus did the font cache flush.