I have OSX 10.8.2 and MonoDevelop 3.0.4.7 install yet I can’t get those darn quick-fix key binding working. Quick fix... is assigned to [Alt]+[Return] and Show fixes is [Cmd]+[Ctrl]+[.]. But when I press those nothing happens at all. The simplest use-case of those for me creating stubs and adding some imports.
I come from the Visual Studio world so maybe there are some differences in this behaviour? Any clues how to get those shortcuts working.
You need to have source analysis turned on for these things to work, however there are some issues with the keybindings but Alt+Return should work out of the box with quick fix.
But remember source analysis turned on under Preferences.