So, this is weird. Really weird. I upated my Windows, 100+ updates and 285 MB. Ok, everything goes fine and beaultiful... until I started Firefox. The main problem is that Firefox is displaying Arial instead of Tahoma fonts. Yes, you read it correctly. In facebook, for exemple, all fonts are arial instead of tahoma, in other sites too. I reinstalled Firefox and tested it without any extensions, and the problem continues, so I think the problem is one of the updates on the Windows that messes up some font rendering stuff. Oddly, I did an search on Google and this problem seems to affect Linux Users... Anyone knows about that?