Skype tits-up on Macs - you bet!
You bet! Long story short: Skype crashe on my main Mac while trying to call a Windows box. That bos then fell over. I fired up Skype on 2 back-up Macs (no problems) and on a W7 Windows box, also no problem. Meanwhile the guy I had been trying to call reported he could no longer log-in, tried 2 soft re-starts - no joy - the a hard reboot, and got Skype back. Even with a hard re-boot I could not get the 1st Mac to log-in. Final solution was dump Skype and all associated files and re-install. 2 hours later, problem solved. What a waste of half a day!
So, not only was my Mac affected, it was a bloody nightmare to get it back up and running. The interesting thing is that you had to be online at lunchtime for the problem to manifest itself. All of my backups were offline, and when fired up, performed faultlessly.