After I installed the Service Pack 1 I discovered that the icons in my system tray were different. Mostly they were gone, and it was not because they were hidden. There were also a couple new ones and many old ones were gone. One in particular, the one for my PopUp Ad Filter, was not there. I was now getting pop up ads. When I tried to uninstall PopUp Ad filter and reinstall I found that I could not uninstall it because it was supposedly running. Yet I could not find how to close it so I could uninstall it. I ended up uninstalling SP1 and everything is back to normal in the system tray. Does anyone know what is going on here?