AB certainly has some weird scripting (that can cause problems) but I'm surprised that Ethel (who is one of AB's most well-respected contributors) didn't suggest the obvious option of simply trying another browser.
Most of the 'regulars', around here, have been using Firefox for ages:
http://www.mozilla.com/firefox/
However, there's naturally been a recent rush to try out Chrome:
http://www.google.com/chrome
Unless there's something very seriously wrong with your computer, you should find that AB will load in at least one of those browsers.
Chris
BTW: Because I'm using Windows ME (which doesn't support Firefox 3 or Chrome), I'm using Firefox 2. AB seems to be loading OK for me at the moment.