As much as I would love to root the Thunderbolt, I use Good for work email and it checks for root and boots me right off the server until I'm no longer rooted. It sucks!!! Especially since there are just a few things that I would like to do that requires rooting (underclocking would be nice if battery turns out to be an issue, but SetCPU needs SU access...and wireless tether although there is a way to push an updated file to a non rooted Samsung to activate it and there is a similar non-rooted workaround for the Incredible). By the way, the latest version of Fascinate Froyo (leaked) is said to have a "sniffer" for people that are bypassing the paid wireless tether. Not sure how true that is but it's being reported on XDA.