Services for Unix

I just installed Services for Unix on a Windows 2003 DC. I have a Debian box with Samba shares for our storage drive. I'm trying to test a Linux client.

She is unable to read or write from the Samba shares. Her login is being mapped to the same name from NIS to AD. She can login from a windows machine and read/write to the shares, and she can also ssh into the samba server and write files in the shared directories.