I have one link unit above my navigation which targets exact keywords on what my site is about, on contrary my AdSense for content Leaderboard and Wide Skyscraper show ads that are totally opposite from my keyword, while my ctr increased for about 10 times with link unit I noticed CPC is lower also (but that was just based on one day, today is higher).

Is it so bad to completely get rid of standard content ads and put link units, because this way I earn so little for that site but I think that is because smart pricing (accidental clicks on ads that my users are not interested)?

I earn in whole day with about 25-35 clicks as much as keyword tool shows for only one click, my site is first for the topic? I really don't know what to do. Has anyone had similar situation or can give some advice?