I got rid of Visual Voicemail, Verizon Navigator, Blackberry messenger and all support for Asian languages. Runs a whole lot faster than before, especially now that blackberry messenger does not stay open the whole time.
the only thing i can really suggest for you is to go into your DM and start up the App Loader and see if there is some other kind of program that you didn't know was on there and you can also look at how much memory you are actually using by adding everything up in the list and see if something doesnt match...