fonts problem

Hi. done a virus scan for the first time using nod32 anti virus on my vista ultimate and my fonts have changed....msn....ccleaner and most other apps...more bold and sort of ittalic looking. im using latest firefox and have tried to sort it in the tools options etc and it is alot better (still not how it was tho).but thats just for firefox? but that doesnt change my windows fonts....ive googled the problem and treid a few fixes but to no avail...anyone have any ideas?
Went back to agv. :32:

has cleartype been turned off or on?

AVG or Kaspersky FTW

Its on...downloaded a font fix...its sort of worked a little bit on me firefox...but my apps are the same?

Never had any problems with nod32 been using it for about 3 years. I use Vista Ultimate 64bit with no problems at all.

It was Just when i googled the problem a few people said it was after they done a virus scan which i had just done for the first time using nod 32.