I've tried all the different settings on the different threads and I never get any kind of lock on Google Maps (or anything else) unless I have 'use wireless networks' enabled (and then it's never exact), so I know it's not really GPS, it's just cell tower triagulation. I am not rooted, which I think you have to be for the Lbstestmode app, right? "things will usually work in 3-5 minutes" doesn't sound like a strong endorsement.
I love all the other things this phone can do. I was a Blackberry user (the Bold) and happy, but when upgrade time came, I jumped on the iPhone4 expecting to love it. It was missing some things BB had, but I was hooked on the big screen, so jumped to Captivate, love it, but I need a real GPS on my phone (mountain bike tracking,--things like that, as well as directions). I get the feeling this fix could be months away (we're all just guessing, aren't we?), so since the new BB has a bigger screen finally, I will likely jump there.