Hollander compares it to a "check engine" light that keeps flashing on the dash for no reason.

CNN: STORY HIGHLIGHTS

United keeper Van der Sar made light of his 40 years with a sprightly dash from goal to make a perfectly timed tackle and clearance on Anelka as the Chelsea striker escaped the attentions of his markers.

BBC: Man Utd 2-1 Chelsea (agg 3-1)