I can confirm this bug. I've experienced it on a couple of systems - one running Feisty and one running Dapper. Both of these have network- manager installed. Several other systems, running Edgy, and _without_ network-manager installed, don't exhibit this problem.
The result (for me) is that the system fails to complete shutdown and I have to power off or reset manually. Unlike the bug reporter I'm not mounting the CIFS shares on system startup - they are mounted manually - so that's not part of the problem. I don't currently have a system running Edgy _with_ network-manager, but if I do have reason to set one up I'll report what I find. Andy B -- Unmount of remote CIFS shares fails with timeout on system shutdown https://launchpad.net/bugs/90795 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs