I knowed this would happen. (Spoken in a Gabby voice.) [You've got to be really old to remember how that sounds.]
Skype relies on a network of computers and phones to keep things running and some of these are what Skype call Supernodes. When you try to talk to someone on Skype your computer will look for a Supernode to figure out how to connect to them. Skype are now creating what they call “mega-supernodes” which will take several hours at which point things should return to normal.
Funny, innit? Being able to sit in one's den in Texas, and chat to folk around the world with a clarity that makes them sound as though they were beside you. That's 'Normal.'
When my son showed his son's friend his new 3D camera, the kit said, 'Mmm...yeh. Cool.' and ran off to play with something really interesting.