Please describe the symptoms of your problem.

When I click on a link (from a Google search, another page, etc.), I am sometimes routed to a site other than the one the link should go to. The site I'm rerouted to is entirely unrelated. The site is usually the 'same one' every time (same appearance) but the URL (for example, britewallet.com) is always different so flagging it as an Untrusted Site doesn't resolve the issue.

Do a malware check with some malware scanning programs.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

• http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
• http://www.superantispyware.com/ - SuperAntispyware
• http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
• http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
• http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked