Please help with my skype log in?

I was logged into Skype 5.0 today and it was working fine, but about an hour or two ago it randomly stopped working. Now when I try to sign in, I get the message, "Skype can't connect. Get help fixing this problem," with an active link to the troubleshooting guide. I went through the entire troubleshooting guide which included rebooting my computer and also uninstalling and reinstalling the software. Nothing worked. I then tried restoring my C drive to yesterday's settings, as Skype was working perfectly then. Also, when I quit Skype I get this message: "Cannot focus a disabled or invisible window." I've Google searched this problem and the only solution I found was to make another user profile on the computer, as the person who posted assumes that it has something to do with the registry. My internet connection is fine. Is there another way to fix this problem??