Longer pit stops for 2012 season (or not)

Banning refueling during Sunday races led to a crazy fight between Formula 1 teams mechanics to have a very quick change of tyres, this process usually achieving in less than 3 seconds.
Decreasing the time required for changing tyres was made possible through the use of helium in stud-guns too, that increasing unscrewing speed by 30%.
This method was originally introduced by McLaren-Mercedes, but was quickly copied by all and now team leaders have decided to ban the use of helium starting 2012 season.

So formula 1 drivers will wait a little bit longer at pit-stops until the discovery of a new technology for unscrewing :)