Many users have problems with sound when talking to iPad users
Facetime for Mac OS often does not work when connecting to iPads. The sound drops out after 1-2 minutes. There is a 1000-comment thread on the apple discussion site started 7 months ago (see thread 3388112), and the problem has not been fixed. Facetime between iPads is great, but between my MacBook Pro and iPad (both 2nd and 3rd gen) - not so much.
BobbyOrr67 about
FaceTime, v1.0.2