hey guys, theres a new thread over @ xda thats gotten quite popular. they claim that they have been able to speed up htc messaging for sense 2.5. also, they have been able to access something called 'secure in box' but u will still get the lag if you choose to go this route.
i have not tried this and cannot promise it will work.
link:
http://forum.xda-developers.com/show...ight=touch+pro
(found a duplicate in the tp2 thread, delete if necessary, but this location will reach multiple devices)