Successfully update to iOS 4 on my 3G Lock set iphone.
Can feel a bit lagging from previous OS.
Hate when everytime we press the home button, current app will automatically goes into background process.. need to kill each app manually..

Later try to jailbreak using redsnow 0.9.5b5-3:
- jailbreak success
- cydia installed (white plain logo)
- when open cydia, it hangs at "Downloading Packages".
- already reinstall cydia by re-jailbreak the 3G, but the result still the same.

Anyone facing this problem?