OS X 10.8.3: assign keyboard shortcut to Service?

Some posts on other forums seem to indicate that I’m not the only person with this problem: Under OS X 10.8.3, I can assign shortcut keys to Automator Services in the Keyboard panel in System Preferences, but the keystrokes do not have any effect.

In other words, I can easily run a service from the Services menu, but I can’t run it from the keystrokes assigned to it in System Preferences.

If this is in fact a common problem, does anyone know a solution?

Many thanks for any help.

This problem seems to have been fixed in OS X 10.8.4.