New patch in Cydia. iSSLfix patches the SSL vulnerability found in < iOS 4.3.5. With iOS 4.3.5, Apple fixed a security update with certificate validation, but this vulnerability is still present in earlier iOS versions.
comex has released PDF Patcher 2 to patch the PDF vulnerability as used by JailbreakMe 3.0. If you are already jailbroken, and you don’t need to use JailbreakMe, go ahead and install this package which will protect you from any malicious use of the exploit.
One of the most pressing issues when the iPhone came out was the worse-than-desired performance of the YouTube app, mainly concerning how long videos would take to load. Now there’s a fix, named TCP Optimizer, and it’s freely available if you’re willing to jailbreak your phone.