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I know there are a few threads started on this question, but no one seems to be offering answers to them, so I thought I would try my luck.
Skype is giving me the message "problem with audio playback" when I installed it on my ubuntu 13.10 (using lenovo u430, touch screen). It will not let me make or receive calls. I went through the steps provided through the community help docs for troubleshooting Skype and nothing worked. It's a new computer, and the microphone is working fine, from all I've been able to tell.