Someone has mentioned that it took him 30 minutes due to the fact that his backup was huge. One of the reason why people are recommending for us to Backup the iPad 2 prior to jailbreaking, restoring it to factory fresh and setting it up as a new iPad 2 and then jailbreaking and once the jailbreak is successful (which shouldn't take you more than 5 minutes), restoring the old backup.

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Added on January 23, 2012, 1:20 pm

1. Yes, just download the Apple firmware and do a Shift + Restore and your iPad will be restored to factory settings and your Warranty will also be "Restored"

2. A lot of tweaks that Apple disapprove of such as customisations of our themes etc etc. We don't condone piracy and some of the tweaks in Cydia are paid applications so you pay similar to the App Store.

3. The server maybe overloaded and jailbreaking is easy but not simple, there's a lot of coding and things happens.

4. Tips, as I mentioned above, What I did was to backup my iPad 2, restore it to factory fresh condition, set it up as a new iPad (don't restore the backup yet), run Absinthe to jailbreak and once the jailbreak is successful, restore back my Backup.