I am running a clean instal of WinXP SP2 Integrated Corp edition with all updates, PCCilin antivirus and firewall 2007 with Windows live Messenger. My collegue is using the same with ZA suite in place of my Trend Micro. We both experience the same issue with each other and other people. When connected to each other in an Audio call and then try to share a background it Kills your call.Problem?YES!