Logged in users can't access removable storage if they are not the first user to have used the system for the current uptime.

Steps to reproduce:

Requirements: An Ubuntu 12.04 computer with more than one user account and some USB removable storage media (or a DVD).

What happens:
1) Shutdown computer: "sudo halt -p"
2) Insert some USB removable media and/or a DVD
3) Turn on the machine and wait for graphical login screen
4) Log in as user1.
5) Observe that all media is available on the Unity bar and in the Sidebar of Nautilus.
6) Log off user1.
7) Log in as user2.
8) Observe that *none* of the attached media is available in either the Unity bar or Nautilus sidebar.

What should happen:
8) User2 should also see attached media, *particularly* in the case that user1 has ended their session.

The result of this behaviour is that the first user to login gets exclusive access to all peripheral storage devices. No other user can access them, even if the first user to log on his ended their session.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: udisks 1.0.4-5ubuntu2.1
ProcVersionSignature: Ubuntu 3.2.0-38.61-generic-pae 3.2.37
Uname: Linux 3.2.0-38-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: i386
CustomUdevRuleFiles: 10-vboxdrv.rules z80_user.rules
Date: Wed Feb 27 21:32:15 2013
HotplugNewDevices: /dev/sde1 /dev/sdd /dev/sde /dev/sdd1
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
MachineType: Gigabyte Technology Co., Ltd. EP35-DS3
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-38-generic-pae root=UUID=b6fc18f5-0359-438a-aea7-6df60509da93 ro quiet splash vt.handoff=7
SourcePackage: udisks
Symptom: storage
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/04/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: EP35-DS3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd01/04/2008:svnGigabyteTechnologyCo.,Ltd.:pnEP35-DS3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEP35-DS3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: EP35-DS3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.