Mountain Lion cant see my WD external Drive

I have just got my new MBP 15inch this week. I tried to mount a 1TB WD external Hard disk ... but my MBP (including the Disk Utility) cant see it. The external drive can be mounted perfectly on another MB 13 inch Mac OS Leopard machine.
I tried to plug/unplug ... use different USB port ... and i failed. After two days I tried again and only once my MBP 15 inch detected the drive !!!! It was very weird ! I copied some stiuff from the drive and unplugged it. When I tried to plug it again, the same problem appeard !!!
Help !

Thanks for the no-one-help. But for other poor buyers : Buy a new SS USB cable. It seems that Mountain Lion cant read the WD with the one-year old cable. Anyhow ... both are frustrating (Apple and WD )
get a new cable !

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