Guys -
Look around there are several threads regarding this, both here and over at XDA. Here are just 2 of them:
http://forum.xda-developers.com/showthread.php?t=569183
http://forum.ppcgeeks.com/showthread...+push+internet
Just installing those 2 cabs helps tremendously.
I also deleted all of the Verizon stuff in the windows/startup folder, and installed HTCAddicts cleanRAM:
http://forum.xda-developers.com/showthread.php?t=514333
All of this should get your Ram usage down in the 50s