As silly as this article is it took me a bit to find how to stop Skype from starting automatically on my Mac running OSX Lion. I have been running Skype version 4.X because the new Skype versions, specifically Skype 5.X, has really taken many steps backwards on the Mac in my opinion. I am so fed up with Skype on the Mac I am considering stopping to use Skype at all. Not only can you not stop Skype from starting automatically via the Skype Preferences window anymore but the new UI (User Interface) for Skype in Skype versions 5.X+ is horrible. Gone are the days where you could actually not have Skype engulf your entire screen or when Skype was actually useful for certain things. I definitely feel as if they stopped putting the do not start Skype on login outside of the Preferences configuration window simply to make it harder to find.
Some people may find the Dashboard that resides to the left of your farthest left desktop on MAC OSX useful however I always find myself scrolling to that desktop on accident. I attempted to use the Dashboard for awhile for various plugins/buckets that made accessing things like a IPSec VPN client I used fairly easy but the truth is it is even easier to keep the IPSec VPN client in the OSX Dock. I believe the Dashboard was introduced in OSX 10.4 or OSX Tiger. The Dashboard acts as a Space and in OSX 10.7 or OSX Lion they added the ability to easily remove the Dashboard as a space. Follow the directions below to disable Dashboard as a Space or a Desktop screen whichever it is.