We got this when using Firefox2 open EAServer.
It didn’t happen on production and our developers’ machine. Looks like a test certificate running on 64bit win server 2003 problem.
Type in “about:config” in Firefox address bar to pop up the configuration window. locate the line named “security.ssl3.rsa_rc4_40_md5″, double click it to toggle it’s value to ‘true’.