which one do you have? motorola droid? HTC droid eris? HTC droid incredible?
make sure you get advanced task killer FREE. it shuts down everything running in the background if you feel your phone is getting sluggish thats usually the problem, just open up task killer and click kill apps. and your memory will go up.
flash was supposed to be out already, adobe engineers already have it working on the motorola droid but they havent released it, you can see a video of it on youtube so they ARE workin on it.