Question: I moved from using the Flex Builder 3 IDE to Flash Builder a couple weeks ago and have noticed a ridiculous jump in compile times with the same project. It almost seems like every time I build it does a clean build. The project I am working with is pretty big, but when it takes more than 4 mins to build, something is wrong. I tried adding more memory to eclipse and all the tricks I could find on the web but the compile time never really changed.

I am running under Windows 7 32bit, and I get the same performance from the plugin and stand alone version of the IDE.

Anyone know why and how I can speed things up?

Answer: 
First of all, it's worth noting that in checkers, half the squares on the boards can never be used, so you really only need an array of 32 items, not 64. Taking kings into account, you get possibilities from 0 to 4 instead of 0 to 2 (though when I did it, I found it easier to use -3 to +3 instead, so the values for red and black have the same magnitude and opposite signs).
I would also use a bitmap for this. The functions to check for 1, 2, and 3 will be a little unintuitive to write, but should be very fast. 

You'll, of course, need to be careful of the edge cases and a fast solution will probably involve some integer and modular arithmetic on the indexes.