Something to remember. Skype likes to hog the 80 & 443 ports by default, which can be a pain if you’re trying to run a local Apache server for development.

It has a simple solution though, just open up Skype and go to  Tools -> Options -> Advanced -> Connections and untick the “Skype uses port 80 & 443″ option.  Skype will use some other posts and Apache will be free to take port 80 again.