Sorry, so you're saying that you only get disconnection problems with Skype running? I don't think I can help, as I don't actually use either Skype or Comodo, but just wanted to clarify the issue. You'll have to excuse my ignorance, but does Skype connect to the phone line? Anything that's connected to your phone line, in addition to your usual phone connection and your broadband, has the potential to cause problems. If Skype connects to your phone line, have you checked that your ADSL microfilter is connected correctly, and that Skype passes through it?