Jay, Sorry for the lack of response... maybe nobody knows the answer based on the limited information you provided
You say it only happens sometimes. Is this at random times, when you're typing an URL or only within webpages? ie searches, filling in forms, etc.
Have you done a full antivirus test? Are you using any malware protection?
a-squared
www.emsisoft.com/en/software/free
Ad-Aware
www.lavasoftusa.com/software/adaware
Spybot
www.safer-networking.org/en/home/index.html
The only references I can find relate to Java. Is your Java up to date? Try disabling it.
Does the website's text appear backwards as well, like on this site
http://elgoog.rb-hosting.de/index.cgi