User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0b6) Gecko/20100101 Firefox/4.0b6 Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b6) Gecko/20100101 Firefox/4.0b6 At each initial start-up I receive a pop-up window with the title: Alert. The text of the window says: The operation cannot be completed because of an internal failure. A secure network communication has not been clean up correctly. The pop-up has an OK button. When the OK button is pressed FF starts, but the tabs are blank and the pages are empty. Closing FF and restarting clears the problem. The problem will recur until the PC is restarted or a switch to and back from FF 3.6. Reproducible: Always Steps to Reproduce: 1.Boot PC 2.Start FF 3.Get message Actual Results: I get the Alert pop-up and the blank tabs/pages Expected Results: FF opens with no errors and my home page is displayed. I have a .png file of the pop-up alert window.