run anti-virus and anti-spyware software. Antivir takes the top spot in this av-test.org study - http://www.virusbtn.com/news/2008/09_02
As for anti-spyware I typically use ad-aware from http://www.lavasoft.com/
this sort of sounds like what you might have, as it also redirects to juggle.com
http://www.spynomore.com/google-redirect-virus.htm
VGChartz in no way redirects you unless you are IP banned, and that is to 1 specific website. Also, none of your IP addresses match any accounts that have been banned, so no incidental banning could have occurred.