21 Months Processing Time?

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Guys need info,

when i left canada in september 2010, no one stamped my passport in canada airport

when i landed in my home country also they did not stamp in my passport in the airport

i stayed in my home country for 4 months

when i took the flight back to canada, my home country stamped in my passport

when i entered canada, they swiped my PR card.

does this mean !!!! Canada dont have records that i left the country for 4 months???
they only have my entry record ???

Their records are bound to be incomplete. The only way to know what they have is to ask them for it. It has happened to me many times that I have gone to the U.S. for the day and they did not swipe my PR card or anything else when I returned. So, they have no record of when I came back.