your forum may need adsense optimization so read more and more pages at adsense blog and also use some Keyword Optimization, Keyword Placement, and Keyword Analysis.. your ads should be within attention of viewers when they are surfing or posting threads and post. also have some patience as earning may increase with continuous experiments. wish u all the best
Eh, you might need to recalculate that. 109/37546 isn't 0.29, it's about 0.029, which is a pretty bad CTR. Would you care to provide a link to your forum?
I know you have not posted url, but anyway, you should not make public your ctr and number of cliks. Preventive is better than crying