It runs 2.0 just fine and I'm pretty impressed. The lanyard is a little strange but doesn't really worry me. The difficult part for me was the connection between my PC (running Windows XP sp3) and the phone through ActiveSync 4.5, the connection software provided with the Windows Mobile 6.1 OS. Apparently there is an incompatibility that Microsoft has yet to address.
In the end I had to roll back sp3, then on the Samsung go to Start --> Settings --> USB to PC and uncheck the checkbox for "Enable advanced network functionality". Once done, the whole installation went like clockwork.