Manual keybord shortcuts in system settings disappear after reboot

[Simplehuman]

Some manual keybord shortcuts in system settings disappear after reboot.

For ex. I'm setting "Switch to workplace 1" to ctrl+1 and "Switch to workplace 2" to ctrl+2 in the
"Navigation"
After reboot my settings disappear and I have to set them up again.

I have a fresh install of 12.10 beta 2 x64 with the latest updates.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: gnome-control-center 1:3.4.2-0ubuntu18
ProcVersionSignature: Ubuntu 3.5.0-17.27-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu1
Architecture: amd64
Date: Wed Oct 10 10:01:19 2012
ExecutablePath: /usr/bin/gnome-control-center
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121006)
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANGUAGE=ru_UA:ru
 LANG=ru_UA.UTF-8
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.4-0ubuntu4
 deja-dup 24.0-0ubuntu1
 gnome-control-center-signon 0.0.18-0ubuntu1
 indicator-datetime 12.10.2-0ubuntu2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sparhawk (sparhawkthesecond)]

Eek.... same here. "Upgraded" to 12.10 (stable) and all my custom shortcuts disappeared. Does anyone at least know where the settings file is, so I can restore from a backup?