On several Dell Optiplex 260 SFF computers running latest version of Windows XP, initial Internet access hangs using IE7. A look at the Task Manager initially shows a single instance of Windows Explorer "Running". After about a minute a second instance appears in the Task Manager window showing both instances as "Not responding". The application then hangs. I kill the application(s) by either closing the Explorer window or ending the "iexplorer" task. The next time the IE starts, the program acts normally, but if I shut the browser down again, I get the same problem the next time I try. Not a show stopper, but definitely irritating. Any suggestions would be gratefully appreciated.