Yes, we are running IPC on WinXPsp2. I also ran into an issue with the services button. When pressed, it would display what appeared to be the raw XML code instead of the list of subscribed services. It ended up being a VPN client issue. We use checkpoint and the security policy was blocking the file IPC needed to properly generate that window. We only had to disable the security policy, launch IPC, then re-enable the policy. Once IPC received the file the first time, it was good to go from that point forward. Not sure if that's the same issue, but I wasted a lot of time running around in circles trying to figure that one out.
