I have windows 8.1 and whenever i use skype it freezes the computer. i have even tried using the desktop client but the problem still persists. when i try to call or recieve a call the whole computer freezes
Also worth mentioning: Skype has started running a lot of ads recently, if I'm not mistaken close to all of them use hardware acceleration. If your GPU has a problem with that it might be the cause of the crashes.
This issue has been effecting me. I had to swiitch to Oovoo, which pales in comparison. In my case, excessive resources ARE being used and if I try to launch skype everything freezes and I am forces to shut down my PC. I haven't been able to find a solution online for this and I miss my skype.