Hi, you didn't change any settings or installed anything extra did you? Have you fully updated your system after install?:
viewtopic.php?f=3&t=2054I would also go to Synaptic Package Manager (Menu | System Tools | Administration) and on 'Edit' select 'Fix Broken Packages' - if it does not show any, boot into 'Safe Mode' equivalent (second menu option in GRUB at boot time) and select 'dpkg' - be sure you have a wired connection to the internet before doing this - after the updates have applied, shut down (DON'T select Continue!) and reboot the machine in normal mode to see if this helps. If still an issue try this from a Terminal Window (Menu | Accessories | Terminal):
- Code:
sudo apt-get install gnome-system-settings
Keep us posted!