Cannot access admin Configuration page in Firefox 8

[cas]

I'm using VM2.0.0 on 2 websites.   I cannot access the admin Configuration page in Firefox 8 for both sites.  It works in IE8.   The first website stopped going to the config page when I upgraded from RC3-M to the RC3 final release, and now with VM2.0.0 I have lost the ability in the other website as well.  For the second website I was able to get to the Config page ever since VM2 came out, but tonight it stopped going to the Config page.  When I click on the Config link, it just gives the indicator that it's going there, but never does.  What is going on?   

[cas]

I upgraded to Firefox 9 and now it works.