Firmware Revision 2.003 + WD SmartWare update 1.2.2.5 = success!

WD External Drives External Drives for Mac
1

OS X 10.6.4 + My Passport Essential SE 750GB + Firmware Revision 2.003 + WD SmartWare update 1.2.2.5 

no installing/updating problems whatsoever and works.

thank you very much.

2

Awesome!