I am chipping in here because I had a similar issue this morning on three computers on a home network (modem/router combined). 2 x XP, 1 x W7 32 bit I didn't have redirection issues, but key web sites such as microsoft.com, facebook, paypal timed out and Microsoft Security Essentials failed to update because of connection problems. But most other websites worked fine. Email worked fine. I suspected some sort of hijacking. I was able to update Malware Bytes and scan but nothing was found. I turned off the computers, turned off the modem/router and unplugged it for a minute then rebooted everything and I was back to normal - problem gone. I do have my own admin password for the modem/router and wireless security is on. I have never seen anything like this before.