Is it possible to disable the Super+<Number> shortcuts that switch to apps in 12.04?
You can change the unity keybindings using compizconfig-settings-manager. Go to the Ubuntu Unity Plugin and change the "Key to show the launcher" option.
Bear in mind that changing some options with compizconfig-settings-manager can break unity.
Change keybinding "Key to show the launcher" with compizconfig-settings-manager is bad, dirty and cheap solution. But, changing Super hotkey to Shift+Super is satisfactory for me. Now I use Super+Number to navigate between workspaces and Shift+Super+Number to navigate between application from panel. Thanks to all.