I think you have be infected with some evil gator program. download ad-aware to scan your computer.
and file
l*n
2 楼
Norton AV can only scan viruses & some trojans. Gator is some advertise software that is hidden in your system. everytime you use IE, it will popup some advertise windows. Norton cann't detect such things. Ad-aware can detect these things like lop.com, etc. Ad-aware is an award winning, free multi spyware removal utility that scans your memory,registry and hard drives for known spyware components and lets you remove them safely. Here is a link you can download it. http://download.com.com/3000-20
n*a
3 楼
You need to delete all IE temperary files and then re-try it