Updating my update:
I signed out, then signed back in, and the page seems to work okay now. I still think someone in your IT department should look into that, as I've never had a problem like that before -- when I load myalli.com, I usually either come right to my page or the log in screen. I dont' usually receive a server error. And, I tried using Firefox, IE (which I've never logged in with before), and Mozilla and all three received the same error message -- and there were no style sheets loading either.
I'm a part-time web developer, so I know a 500 Internal Service Error when I see one. Might want to check your SQL database.