We are currently upgrading our users from 9.3.1 to 10. One of our users PC hangs up while uninstalling 9.3.1 the process freezes or hangs up on registering modules rdo.dll. I tried the procedures in troubleshooting article 32953 to no avail. I tried to repair 9.3.1 but then freezes in same spot. When I looked in the registry there was no Raster registry under HKEY_CURRENT_USER\Software\ESRI\Raster registry. Is this a know problem when upgrading from 9.3.1 to 10 and is there another solution?