I don't know if this is related or not, but I've been having problems getting to a few sites, even Jason's ToolBox. Page would start to load and then just stop without any error messages. The only thing I could remember that was different from the time that this started was that I had updated AdAware and removed the Alexa key. Did it everytime I ran IE repair, too.

OK. I ran IE repair, AdWatch showed an alert and I ran AdAware. This time I excluded the Alexa and left it in. Now all those sites come in just like they used to. Maybe a coincidence, but something worked. :-)