I did but I backup everything before I did the update. I used Astro to backup files and Sprite backup to save all my settings.
Wow. Sprite looks pretty cool. Along with your browser/flash config finding, I've added it to the http://androidforums.com/support-troubleshooting-evo-4g/141369-how-fix-froyo.html top post.
Is anyone else noticing this or is it a placebo effect? Would updating to .6 help?