All day I`ve had no problems until now. Started pc then when trying to starting up Outlook express a pop up box appears requiring username and password. I have updated and ran 2 anti spyware programs and even rebooted pc but no joy. I have not installed any programs of late so there should be no conflictions. This seems to happen every so often but resolves it`s self after a couple of hours or so, how can I stop this from happening? I run winxp. Please help!