The TVG people are pretty sure this isn't a problem with the site and is malware that was picked up somewhere else. I had a similar problem within the last year that hi-jacked my browser when I went to specific sites - Google was one of them. I'd click a link and it would take me somewhere else. I scanned my computer not only with Spybot Search and Destroy and the regular Windows tools, but also with Malwarebytes and the problem was fixed. I scanned twice and rebooted after each scan, just to be sure
You can download Malwarebytes here: Malwarebytes Anti-Malware - Free software downloads and software reviews - CNET Download.com
Spybot S&D is here: Spybot - Search & Destroy - Free software downloads and software reviews - CNET Download.com
There are lots of other similar programs. Those are just the ones I use and like.