Hey guys,
I've video chatted before with a few other users and have had no problems. But, everytime I try to video chat with my girlfriend, it goes for a couple minutes and then the video freezes and eventually I lose the audio too. After we exit out of the video window, either my computer or her computer gets the "not responding" error. Anyone know what i could do to fix this?

btw we both have previous generation MBP's.