I just figured out what I did, I installed new fonts last night that I brought over from a Windows machine. I didn't install any of the fonts with errors or warnings.
Anyways I tried cleaning the font cache using ONYX and restarted to find that the text was back to english characters but seemed off and was bold, I also found out that Firefox was affected. I decided to run the font cache cleaner again to see if it could put back the original font but now I'm back to the foreign font.
Any way I could find out which is the default font and reinstall it?
Thanks