I just installed PE 2.1 and have found that it will open on the first boot after the install, but not thereafter. I checked PG settings and I allow everything for PE, drivers, hooks, etc. But it stalls during Open, I see the skeletal box only. When checking Task Manager, I see "PortExplorer.ex" please note that the last "e" on ".exe" is missing. I checked the shortcut and it has the dorrect full name "PortExplorer.exe". Uninstalling, reboot, install, reboot gets it running again, but this is not a workable solution. Since I don't use PE regularly, I only found this yesterday for the first time, and then again today. W2K SP4 patched. Jim I'll try again tonight and if it's still a problem, then I'll go back to 2.0.