Turn off the script error messages, at least from the welcome page (that displays your website)
I got this annoying "An error has occures in the script on this page.. Do you want to continue running scripts on this page"... that's not a nice feature.
Somehow, the errors started to pop up after maximizing the window.
--------------------
Alex: do not know. Maybe this is a bug. But probably it is related to your current IE installed. Or settings or it is too old.