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I have owned this vehicle since July 4, 2006 and recently have noticed that it is very difficult to turn the key on to engage the car.  I can sometimes spend a few minutes trying to turn it on, always with success.  Frustration is a key word for me.  I sometimes think that I will have to call someone to have it towed in.  Has anyone experienced this problem?  I reported it to my salesman and he told me to turn the steering wheel one way and turn the key the other way.  This works but not always at the first try.  I am thinking of trading it in on a new 2010 RX450H but now I am hesitant about doing it because of this frustrating problem.  Is this problem only experienced by me or are there others?