Read Only Sharepoint 10.5 Server (Cannot delete once copied locally)

Wondering if anyone has run into this issue before:

We currently have a XServe Running 10.5.8. We have created one sharepoint that is read only. Inside the sharepoint we have folders. Inside these folders are image files. (jpg, png, gif).

When a user from the group mounts the sharepoint from a 10.5.8 client machine. They can read and copy any file to the local machine as they should, and delete. The issue here is when the user copies a folder from the read only sharepoint. They cannot delete the folder once copied locally. This happens on a 10.5.8 client.

We have tested this on a 10.6.2 client machine. The user does not have any issues deleting the folder once copied locally from the sharepoint.

Both users tested are standard accounts. Any suggestions would be appreciated.

Thanks,

Libitz