These warnings are sent out when you abort/abandom some games. I had a problem with my Internet connection a couple of days ago and got disconnected (and thus lost) twice (i.e. in two games) and received such a warning. The most annoying thing was that I lost due to it in the below position. 
I keep getting warnings
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Jul 22, 2012
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#2
Hi Support,
I keep getting warnings and am unable to play for 5 mins. Why?