Oh yes, another little tip if you want to or need to freeze/bounce BFD
In the gui, right at the bottom is a little button that reads "offline"
Click it so that it turns
red - this should solve any problems relating to cymbals cutting off during the rendering process and is recommended by the helpful people at Fxpansion
And you always have the option of doing a real time bounce instead of fast bounce. This too cures a lot of problems
Of course, like Danny says, if you can get away without having to freeze or bounce, so much the better. I haven't had to do this since I got my new machine.