I turned on my locally running Domino server this morning and got the following
03/07/2012 07:16:09 AM HTTP Server: Using Web Configuration View
03/07/2012 07:16:10 AM HTTP Server: Error – Unable to Bind port 443, port may be in use or user needs net_privaddr privilege
03/07/2012 07:16:11 AM HTTP Server: Shutdown
My initial reaction was extreme concern because I didn’t know what was running on port 443 and that I had a virus/trojan
Turns out that it was Skype – well there you go. I turned off Skype and the http task loaded just fine
Once the server was loaded and http was running, I then started Skype and there was no problem !
Xomino 
If you open up skype and click on the menu tools -> options -> Advanced -> Connections and unckeck the use port 80 and 443 as …. checkbox and save and restart skype.
This should be any problem.
Excellent – thank you !! I am assuming those settings are to try and get around firewall rules…..