The Apple "2.0" firmware link I posted may be a beta, FWIW.
Info here:
http://weblog.infoworld.com/enterprisemac/archives/2008/07/iphone_20_downl.html
While I have had no problems, there are reports of some folks having issues.
2.0 final release will be out in the AM (0800 Eastern) and should show up in software updates.
FYI.