samba share not possible anymore permissions not automatically added
 

Hello everybody. I have a samba shared folder in my flash disk. Yesterday I installed ubuntu 11.04 and now sharing is not working any more. I do the usual procedure (that worked so far), I right click my folder > sharing options and tick "share this folder" as well as "Allow others to create and delete files in this folder" but I dont get the usual messages asking to add permissions automatically.
When I try to mount my folder in another pc with linux, I get permission denied and that the folder is only readable and in another, windows cannot find the network path to my folder.
My folder has about 10.000 files. asking to add permissions automatically
I created another folder on the same flash and when I create share I get the message asking to add permissions automatically but it is not visible either. I even cant see my folder in "my places" > network, so it is not a matter of the mounting command
Please, any help would be appreciable,
Thanks in advance

Solved ! after uninstalling AppArmor, everything worked fine