Apple has released a security update to fix the vulnerabilities in the previous iOS. So with this update 3.2.2, Apple has closed the way for jailbreakme.com to access the phone’s core component to jailbreak. The new update came just elevan days after comex officially launched the simple jailbreak using the PDF exploit in the Safari browser. If you are having an jailbroken iPad, its recommended not to update for the new version.
Direct link to download iOS 3.2.2 (Official link)