PS3 Update 3.42 "against the PS and PSGroove Jailbreak?

Sony released an update for the PS3 seems to be against Jailbreak and PSgroove PS.

ps3

Sony has just released an update for the PS3 of those that are basically required if one wants to play on PlayStation Network. The update is 3.42 and, according to Sony fixes a security problem on the PS3.

The manufacturer has not given details on the reasons for reaching this new update, but if you stop to think, could be his counterattack against PS Jailbreak, PSGroove and other alternatives that can hack the PS3.

Unconfirmed, I think Sony has quickly created a way to block attempts to jailbreak to the PS3, which have soared after learning of the hack that allows PlayStation 3 and launch pirate copies of games that are on the hard drive the console.

We would like to know the real reasons for this update, so if anyone can tell us exactly what it is, you can do from this post.