MBW Ubuntu 11.04 Cant write to private folders

I have a MBW 1 drive in my LAN with 2 Ubuntu PCs. I can mount the Public folder and write to it . I can mount the Private folders but cannot write to any of them. What have I missed?

Hi, check if you enabled the write permissions to the user you are using to access the private folder. Check page 144 of the manual.

http://wdc.com/wdproducts/library/UM/ENG/4779-705013.pdf

Nope. This is not the solution. I have write enabled for this user but just get ‘Permission denied’ Any other ideas?