For a while I use iChatAV but few of mine friends have winXP with aim 5.5 didn't work well and kept reject due to no respond. We couldn't figure it out why. So we decided to switch to Yahoo! Messenger Video to test it. It surpised me that work fine but extremely slow. It's getting 1fps to 3fps. How do I make it more frames to 25fps? They told me that Yahoo! Messenger work well with pc and said it fast and smoother but not on Mac? Why it make it slow. Some of my friend have WinXP with AIM 5.5 work fine with iChatav not all.. Why? Something I need to know that I can tell my friends to update DirectX? XP? what?