I have ML 2011Dec22 installed on my 60D.
After waking up the camera from auto power off with the shutter release, * or AF-ON buttons, the first press of the MENU button does not display the menu.
When waking up with the MENU button, the menu is not displayed until I press MENU for the third time.
Waking up with the Play button works OK: the last picture is displayed immediately.
This behavior is still present when ML is disabled by switching the camera on with the SET button pressed.
With another SDcard without ML, the camera behaves normal.