I'm running OS 10.1 on one of the new TiBooks. I'm connecting to the internet via an SMC wireless router (7004AWBR; latest firmware) attached to a 56K modem. With both wired and wireless connections, I'm getting terrible performance under OS 10.1; through-put tops out at under 1.5 kbytes/sec. Other machines (running various version of Windows) on the same network perform fine. If I switch to 9.2 it also works fine, so I don't think it's a hardware problem. If I set up one of the windows boxes to do routing/NAT it also works fine. So I think it's something to do with the OS X.1/SMC combo. Problem is, where to start? Any hints would be much appreciated.