Apple's iPad is selling well, but hackers have been busy and the iPad has already been jailbroken, according to postings online.

Yesterday, Twitter user MuscleNerd posted a video and picture of what appears to be a jailbroken iPad, credited to hacker Comex. Comex is a member of the iPhone Dev team, who have also said that a jailbreak is possible but have yet to release it.
Both attacks appear to depend on the use of a variant of the Spirit application that is used to crack iPhones.
Apple is playing a continuing game of cat-and-mouse with those who seek to use their own software on the devices. In the past, updates have rendered devices useless and it bans some users from its App Store.