I do this too - but it works only 1 out of 4 times…
For now, I have copied my files to a little external HD and it’s connected direct to the WD LIve, a work-around. I am hoping WD will eventually figure out the mystery of the disappearing shares…
I called today WD - the tech said I should try a Linux share to test - as I have a Ubuntu PC I will give it a shot, if this work it really means there are some issues with Win 7 advertising its shares.
Thanks.