Monday's iOS 4 upgrade should have patched about 65 different vulnerabilities within the iPhone's operating system. However, the iPad may actually be susceptible to a number of those 65 software vulnerabilities. The bug count is actually a record for the iPhone, which far exceeds the high count of 46 bugs found in last summer's iPhone OS 3.0 update.
Computer World is reporting that iOS 4 actually included patches for 35 different bugs, which averages out to a total of 54% of the purported vulnerabilities fixed. Most of the patched bugs were actually issues with WebKit, the open-source browser engine that fuels browsers like mobile Safari.