To add to that. I sometimes use browse host on them. If they are listed as modem under speed (Must be using some kind of Force UltraPeer fix) I delete them straight away as surely they can't handle the amount of I/O messages that they are suppose to. I often do they same to Cable/Dsl users (Not always though).

I BTW connect myself as an UP. but I do have and OK connection for doing so. 60 KB/s up, 250 KB/s down.

UP messages use about 10-15 KB/s each way at the most.