There is a JavaScript error that makes Firefox hangs forever when Firebug is active. Here are the steps to reproduce and the JavaScript error.
Go to http://cite.opengeospatial.org/teamengine/
Click Start Testing
Type in my username and password
Click OK
Click Create a new session
Select Web Map Service (WMS) 1.3.0
Type in "s_wms1.3.0-ms5.4" as Session Description (Optional):
Click OK.
2009-07-02 13:08:34 UTC in TEAM Engine
