Apple released new iOS 4.0.2 for Iphone and 3.2.2. for IPad making the recent PDF exploit useless in an effort to stop jailbrake hackers... According to the official news, Apple says that "...A stack buffer overflow exists in FreeType's handling of CFF opcodes. Viewing a PDF document with maliciously crafted embedded fonts may allow arbitrary code execution. This issue is addressed through improved bounds checking...". That means the recent jailbrake has been rendered useless but hopefully crackers will find another exploit...