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Christopher,
I had tons of freezes and lockups when I first started using this ROM.

Try flashing to the stock Sprint ROM (I see you are on Sprint), then flash back to this ROM.
That took care of the problem for me.

I still see a few lockups, but they are only related to the SMS tab - everyone has this problem.
Before the trick of flashing to stock and back, I would lock up on almost any screen for seemingly no reason.

Hope it helps.