Apple aluminum wired keyboard model A1243 malfunctions
all of a sudden, apple aluminum wired keyboard model A1243 started malfunctioning. In numeric keypad, 9 key looks like it stucked. but when i open the keyboard viewer and click on 9 key it becomes free. no spillage or damage on the keyboard. it looks like it started after the sofatware update on May 16th. any idea?
Mac mini (Late 2012), OS X Mavericks (10.9.3)