HI, Please see this page and give me suggestions for adsense placement. http://www.javabeat.net/javabeat/ide/eclipse/articles/2007/04/refactoring_in_eclipse_3_2_1.php
I think you are using two Link units and one on top of navigation is showing The page cannot be found Rest seems ok to me
I only see one link unit which is fine but you should add another google above the fold of your page. In case you don't know what that means, it is whatever visitors see on your page without having to scroll. Judy
Bar at left will be more effective rather than right side - Try Google site heat map - it tells you hot spots to get clicks
Red is the most favourite position for ad placemnts / clicks, then Orange, Then yellow then white - This is guide by Google, I have tried this and i observed 50% increase in clicks. Try it
Looks better - As i mentioned earlier there are two link units on your home page - one on top and one top of second naviagtion That shows The page cannot be found
To the right of the Clean up window, something like a 250 X 250 and a 728 X 90 banner in place of, or in rotation with that banner you have currently.