I am using xmonad. When starting nautilus it leaves a menubar on all workspaces. Closing nautilus window still does not close the process. A picture is attached to see the bar. Often you have a panel to cover the menubar and it won't be visible but still a rare circumstance the bar might overlap your panel.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: nautilus 1:3.2.0-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Sun Oct 16 00:20:19 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: nautilus
UpgradeStatus: Upgraded to oneiric on 2011-10-13 (2 days ago)
Status changed to 'Confirmed' because the bug affects multiple users.