After reading your post, I looked back past this most recent payment and now I'm confused. I've owned 400 FLY (reinvested winnings from sale of 2500 AER which were originally GLS) since before the Aug 2010 dividend. So far my quarterly payments have been:
This is in a regular brokerage trading account, not an IRA. So sometimes they hold back 0.3 cents and sometimes they don't. And this is different from what you are reporting, so there is more going on here than I first realized.