As an avid fan of using the Premium Autosupport feature myself, I understand your strife
I happen to use its functions on a number of computers and browsers (Including Firefox, IE6, IE7 and IE8)
However, out of all of those versions - the common element is that it happens to use Java
If I'm going to encounter problems most times - causing me to close my browser from things not loading - It is typically Java.
Which particular version (latest? MS or JRE version?) of Java do you happen to be using?
I'm working fine with Version 6 Update 7 (Which has been reported to have issues with some applications elsewhere, but I'm experiencing no issues here)
Let me know, hopefully a simple update of Java may be able to resolve your issues
Thanks for your question Richard,