Well finally got tired of the notifications and did the update. I want to go back and not have done it. I have never had any issues with my phone in the 6 months I've had it. Now that I did the 2.2 update, I want to throw it through a window. It is so slow and bogged down. It's not fun anymore.
Did you even wait some time for the device to resync, allow the caches to rebuild, and reboot it a couple of times? If not, you're not giving it a fair chance. There is no way 2.2 is slow and bogged down, but right after installation it feels that way for a couple of hours.