Under eight hours. That was the time it took to jailbreak beta 3 of iOS5, which dropped back on July 11th and was unleashed later that day. Now beta 4 is out and, well, our stopwatches are ticking. A new beta of iTunes has also been included, and interestingly, this is the first version of iOS5 that can be applied OTA -- though that particular option comes with the warning that all photos will be deleted should you give it a try. We're guessing that "feature" will not be present in the final release candidate, but we could be w