Hard coded string in block Course completion status

The course completion status appears to have an hard coded string. To reproduce in Moodle 2.0.2 (Build: 20110221):

• create a course with two or more activities with completion criteria
• on the course completion settings, select two or more activities to complete the course
• now add a Course completion status block on course home page
• the block shows, among the other things, "Activities completed 0 of X"
• now switch to a language different from English
• string "Activities completed" changes, but "0 of X" is still displayed in English