don't know if i've even typed that much in one text or email? i have typed 3 or 4 sentences so i prolly have. i've not had this issue. what does happen now and then though (even prior to 2.2 so it's unrelated to the update) is that it will quit vibrating upon touching the letters for a bit and then start again...in the middle of typing. no big deal though. has never slowed down like what you are experiencing.
It seems an application or phone settings has become corrupt. I would recommend performing a hard reset to clear this up. The instructions to performing the reset are listed below:
Performing a factory reset via settings
The most convenient way to do a factory reset is via the phone settings.
then tap Settings.
Scroll down the screen,
and then tap Privacy
> Factory data reset.
On the Factory data reset screen,
tap Reset phone,
and then tap Erase everything.
Once you have done this it should resolve your issue. Hope this helps.
zach...in the future you may want to warn people that they will lose everything, before you advise a factory reset. some people don't realize this and then do it upon a suggestion. then they come to this forum asking where their pics, music, contacts, emails, settings, apps, etc, etc are. i know it says "erase everything" in part of the process.....but many just don't understand what they are actually doing. they see a verizon rep suggest this and they just do it.