When I go on the carmax.com website and try a vehicle search, it just hangs and does nothing. This happens regardless of browser. It is not the website because it works fine when I access it from work. I noticed that the there is a .aspx extension. Any ideas? Thanks in advance.

Do you happen to run any "user friendly" security software like Zone Alarm or Norton?

Try disabling any web content scanning/blocking.

Thanks for the reply Nodsu. I unninstalled all security apps and tried again, but the same thing happens.