Good game, need some work
Being in the middle of programming something in Flash myself, I know how hard it is to make something like this. I think this game could be really good with a comparitively small amount of work. There are two main things I would work on:
1.) Fix the controls. This is the most important aspect of a pacman game. If I'm holding up before I can actually go up, the program should assume I want to go up at the next point possible, not right at that moment.
2.) Add a few more things to make the game more unique and less like Mrs. Pacman. Most people have played Mrs. Pacman and aren't going to play for very long unless the game is unique enough.
Well, that's my 2 cents.