Darn, I start hating the % capitulation chance. I've been bombing 3 planets each with a 10-20% capitalation chance for at least two weeks now. And still I draw the short stick every turn. :-(
Isn't it better to send several smaller fleets with a lower chance of success? From the single planet I've taken it seemed every fleet got a chance for capitulation each turn so my mass of 5% chances took the planet in 3 days or so.