[ubuntu] VirtualBox Ubuntu Client Permission Problem

Hallo

Well I know this questions has been discussed very often and I tried differen thins but I don't find an answer to my problem.

I have CentOS 6.2 as host and Ubuntu 12.04 as guest running in VirtualBox.

I have created a shared folder but I have only read access to it. It's a permission problem.

So what I have done:

I have mounted the folder

and then I added my user to the vboxfs

I also tried to change the owner

I have not idea, but I cannot access my Shared folder in reading mode, using root it works.

Also automatically mounting fails.

Can somebody help me please

Kind regards and thanks in advance

Walter