Let's reset your router...
Go Start>Run (
Start search in Vista, 7 and 8), type in:
cmd
Click OK (
Vista, 7 and 8 users: while holding CTRL, and SHIFT, press Enter).
In
Command Prompt window, type in following commands, and hit
Enter after each one:
ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew
net stop "dns client"
net start "dns client"
Turn the computer off.
On your router, you'll find a pinhole marked "Reset".
Keep pushing the hole, using a pencil, or a paperclip until all lights briefly come off and on.
NOTE.
Simple router disconnecting from a power source will NOT do.
Restart computer and check for redirections.
NOTE. You may need to re-check your router security settings, as described
HERE
Then disable proxies again. See if it'll hold.