User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:126.96.36.199) Gecko/20100625 Firefox/3.6.6 Build Identifier: Firefox 4.0 beta 1 After I installed the 4.0 beta, I ran it and there were no buttons in the upper-right hand corner like there usually are (you know with any program). So I restarted the program and tried again, then I rebooted and tried again, and then tried a registry cleaner and tried again. Still nothing. Reproducible: Always Steps to Reproduce: 1. Install the beta for Firefox 4.0 2. Open the program 3. look at the upper-right hand corner Actual Results: Exactly what I have been describing. Expected Results: See Above Have the missing buttons.