Dual monitor goes black on skype call

Ever since i got a dual minitor, when i call someone on skype or i recieve a call , both of my screens go black, the only way to fix it is to unplug my monitors and plug them back in . If i do that , then i dont get any black screens until the next computer restart
Any help ?
PS: i already have all the latest drivers and latest skype

Thanks, Stu. Have you heard of this problem? One thing I hadn't tried was plugging it directly into the wall outlet, so now I'm trying that. I did have it plugged into a surge protector strip so now I'm crossing my fingers that was the problem. Last night it went black about 10 times. I don't really want to return it if I don't absolutely have to; I have lots of stuff on it now, plus I don't want to take a chance that amazon.com will charge me a restocking fee if they don't find something wrong with it (although it's still under the 30 day return policy).

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Message was edited by: EZ Jim
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I have a 30in cinema display attached to my iMac and the iMac screen randomly goes black while the cinema stays active. I can put it to sleep and log back in which fixes it, but often it happens again immediately after. Sometimes it happens so quickly I can't even finishing logging in! I'd like to know if this is a Mavericks issue and I will roll my machine back. Thank you!

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Wanted to update you on my situation with this.
So far 8 hours have gone by and I have not had a screen blackout.
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The next error message I researched said that a fan was bad or needed replacement.
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Dual monitor goes black on skype call

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