<p>When you associated you other accounts before you had achieved 200 rep on Ubuntu?  If so you wouldn't get the association bonus.</p>

<p>Oh, and welcome to serverfault.  :)</p>

<p><a href="http://meta.stackexchange.com/questions/5983/should-all-linked-accounts-get-the-100-bonus/5984#5984">ref</a></p>