Here is another thing I discovered that sped my device up considerably.

http://www.bongizmo.com/blog/moving-all-android-apps-to-sdcard-apps2sd-froyo/

After installing all the apps I wanted that would not all moving to SD in the application manager my internal memory would be just about full and it would slow down the phone a lot. Changing the default install location to SD and re-installing the apps I wanted to move made my device much faster. I had to install a lot of crap on my PC just to change this though.