I am running Windows 7 64-bit. For the past several weeks, since upgrading from Vista due to issues that I realize now I probably should have fixed first, my computer has been acting strangely. While browsing in Firefox with adblock on, I will occasionally be redirected to a random page. Before adblock, it would redirect me to various ads, not only on the newly requested page, but all pages I had viewed in that tab since opening; i.e. after page 10 of a thread did the redirect, hitting back multiple times to go to page 5 would end up redirecting as well. Since I put adblock on, these redirects occur as follows: The page I want will just begin to load, then go blank. The URL at the bottom of the screen flashes to pixel.quantserve.com, then to google-analytics.com, at which point that tab will hang. Also, if I leave the browser open for a while, it occasionally opens a new window which redirects to the Google homepage, rarely to Yahoo as well. Removing/reinstalling FF and clearing temp files has had no effect. The following may compound the problem somewhat: my mom's computer, an XP Media Center box on the same home wireless network, has the exact same problem. It started happening just before I upgraded my OS, though I didn't find out until about a week later. On hers, the original problem was that she could not connect to any web page at all, but I dug through her settings and disabled proxies (why they were on, I couldn't say) and now her browser's behavior is identical to mine. Most sites are fine, but anti-malware sites in particular seem to be targeted for inaccessabiltiy. I had to find alternate links to get Spybot onto our computers. I am currently running AVG Antivirus, Spybot and Microsoft Security Essentials. Full scans have not found anything which has helped in the least. 8-step files are attached. Any help would be GREATLY appreciated.