GR
I had the exact same problem. I've given up on Mozilla Firebrand for the time being.
The Sun Java is I am told, a better version of Java for Microsoft Explorer. I have left it where it is and it works well with all other browsers including Mozilla 1.
If I find out anything re Firebrand and I agree it looks good I will post .
Have you tried Browser MYIE2 that is pretty fast and has plenty of additions that make oit that much better than the generic Explorer.
Regards
SLJ