Hi thanks for your post. Yes it is a NAS type device - it is a mybook live that i plug into my router and then can access as a network drive wirelessly.
I have done all the firmware updates from wd for it to no avail.
It is odd as it works for my snow leopard mbp but lion doesn't like it, obviously there is some new thing with lion that it doesn't like
Having tried the firmware updates what else can I try?
It works perfectly for snow leopard and is a nice external drive