Port conflicts by Skype

Hi,

It seems a very trivial problem that when 2 programs try running on the same port numbers, they conflict with each other. I came across this problem when my Apache Server stopped working. The culprit was Skype. I installed Skype recently and as far as I knew, it used its own unique port number. But, as I delved further, I found that Skype also uses port 80 (which is default port for almost all HTTP servers) and port 443 as alternate ports :O.

To solve this, Open Skype --> Tools --> Options --> Advanced --> Connection --> Uncheck the use of port 80 and 443 as alternate ports.