The Gingerbread update will come as an over the air update. What problems are you having? Maybe we can help you?
My sound alerts for my messaging dont go off even when on normal mode. Notification sounds all the way up. Force Close on texting all the time. I delete a thread in sms/gmail messaging and deletes a different message. Phone is always slow. Feels like the back heats up alot when its on low battery.
I experience some sluggishness sometimes but never have to do a force close. Perhaps you can reset your phone and see if you are still experiencing these issues. Just do that as a last resort because you'll have to reinstall all your apps which is a headache and re-customize your settings.
I'd also suggest something obvious, but make sure you do turn your phone on and off every now and again, I've noticed with those phone more then any in my past, that occasionally it just needs to do a good reboot, and the sluggishness will be instantly gone.