Right now I expierence the same problems. It seems to be absolutely by random if the nokia phone is detected or not!? I have a 6310i connected with a DLR-3P cable to com1. On my machine runs WIN NT. Sometimes when I try to set the com1 port manually, I got an unknown connection error --- first I thought that maybe my com port was in use by another application but this was obviously not the problem! But reinstalling, installing, connecting, disconnecting, booting and rebooting can not be the final solution for this problem??? How does Nokia itself deal with this?? Any bugfixing or other suggestions??