Another strange question...please look at NLS Jan07 put options...?

Today, someone bot/sold ';2'; Jan07 10 puts for .15. This took place when when the stock was only up by about .07. Now, later in the day when the stock is up .30, no one will even sell at .20. I was a recepitant of this one time...I placed a far out order GTC for a cheap price. Somehow I got hit (to my surprise) but only got 3 of my 30 options. But there were other orders at a better price than mine. And what really upset me, was I was right but only had 3 options! Can anyone explain how/why this may happen? Its driving me bonkers!