Whenever I try to reply to an e-mail message, the client, whether Outlook Express or Thunderbird, just hangs and nothing gets sent. When I shut LookNStop down, all is back to normal. This is a fairly recent phenomenon. FWIW, I am running KAV in the background and have recently upgraded, but I am unsure if this has anything to do with it or is just mere coincidence. Any help would be greatly appreciated because LookNStop is excellent and I would like to continue to use it. Thanks in advance.