facetime issues mavericks

Hi,

I am responsible for converting many people from PC to Mac, telling them that upgrading the OS in Mac is eamless. And it has been for a long time. Until the Mavericks.

With Mavericks I am experiencing subtle issues. But, Facetime is a big one.

I tried for the first time to FT with Mavericks and while I could see the other side, I could not hear them. And they could neither see me or hear me. I tried with a few different contacts and had the same results.

I have checked through preferences and there isn't any adjustments I could make. I have searched the forums and I see that people are having difficulties with FT on Mavericks although not like my difficulties.

I wonder if anyone here can shed some light on what is going on. Has Apple dropped the ball finally? Is it becoming more like a PC now where you have to wait for the unofficial beta testers report problems to Microsoft so they can fix it in time - maybe in the next update?

Perhaps not for this forum, but is there a way to go back to the previous edition of the Mac OS?

Farzad