Java script error in IE after service pack 1 update in Vista

Recently, I installed service pack 1 for Vista to my parent's computer.  After the install, they started noticing some weird things going on with their Internet Explorer (7.0).  When they try to check their aol email, the box comes up where the username and password are normally entered, but the box is completely empty and won't allow anything to be entered into it.  I tried to check my Comcast mail from their computer and it came up with an error message saying the the javascript is not enabled.  I went through all of the settings on their IE and javascript is enabled (as well as meta fresh). 

To see if the problem truly was an error with IE, I used their computer to go online using Firefox.  Both AOL and Comcast mail worked fine on Firefox.  I thought that maybe the Vista update may have changed some settings in their McAfee, but the screen for McAfee won't even load up because it relies on windows scripting.  Does anyone know of something that I can try to fix this problem.  I'm sure it's some setting that got changed when the update was done, but I can't find anything on the web that works.  Any suggestions would be greatly appreciated.