speed of connecting on a local network


Just curious. Does anyone know why it takes so long to connect from OS X to another computer? If I connect to an OS X computer from OS 9 it goes quickly. If I connect from X to either X or 9 I get a spinning cursor for 60s or so till the dialogs appear. After that things are normal. Is this the same reason iDisk connecting is slow? On the other hand, I notice that connecting X to an NT box is quite fast. Seconds after pressing the connect button the dialogs come up (for name and password). Any rumors about this floating around?