I do have a temporary fix for your issue.  It's a client specific fix.  Here it is:

1.  Go to Control Panel --> Java (This will open the Java console)
2.  Choose the Java tab (it should be the third tab)
3.  You will see a View button under  Java Applet Runtime Settings.  Click the View button
4.  Add the following to the latest java version listed in the Java Runtime Parameters field:
-Dwt.boot.socketFactory=wt.boot.WTRMIHttpToCodebaseSocketFactory    
See example below: (I would be interested in knowingthe JRE version you are running.)

5.  Click Ok.
6.  Click the General Tab.  There will be a settings button under Temporary Internet files.  Click Settings...

7.  Click Delete Files…

8.  Be sure that everything ((Applications and Applets) & (Trace and Log Files)) is checked.  Click OK.

9.  Click OK to close the Console. 
10. Restart your IE Browser.

Regards,

Jason