I just updated to Froyo about 2 hours ago and it went very smoothly! Phone is more responsive. The annoying problem of the quick search box always coming up when trying to go to the home screen is now gone! Did not lose any data, but did back it up JIC.
users. An Operating System upgrade from Eclair 2.1 to Froyo 2.2 is now available for the SGH-i897 (Captivate). I have not had time to do this yet myself but here is a link to the Samsung/ATT page that has the download and all the instructions.