Another month, yet another PS3 firmware update. Little over one month since 3.41 (and two months since 3.40) comes yet another mandatory update for your PS3. Firmware 3.42 seemingly doesn't add any functionality to your system beyond the usual "system software stability," but it is required if you want to continue accessing the PlayStation Network or the PlayStation Store.
While unverified, this update may be a response to a recently-released jailbreak tool, which supposedly enables piracy on Sony's once-bulletproof system. We'll update this story if Sony provides any additional details on what this firmware does exactly.
Update: The BBC reports that the update does block PSJailbreak and PSGroove hacks. "Since this is an overall security related issue, we will not be providing further commentary to this case," a Sony representative said. "But as we always have, we will continue to take necessary actions to both hardware and software to protect the intellectual content provided on the PlayStation 3."