Well, ναι, dear bar555. There are no impossible things, only unable men, altough I'd say it's impossible to avoid brawls
if I let you alone for one day, ehem.
Rule: Drivers must use the same gearbox for four successive events. Any gearbox changes will result in a 5-place grid penalty at that event. Drivers who fail to finish a race are able to change gearboxes without penalty.
Australia
1. Hamilton - new 'box after qualifying, 5-place penalty
Malaysia
4. Räikkönen - DNF in Melbourne, so free change allowed
15. Vettel - DNF in Melbourne, free change
23. Barrichello - new 'box, 5-place penalty
China
10. Glock - new 'box', 5-place penalty
23. Barrichello - free change because he used a spare 'box at Sepang
"The above driver had to replace his previous gearbox during the last event for a spare gearbox and this was before the four consecutive events expired. Therefore he may use a new gearbox at this event and the four consecutive events will start here in accordance with Article 28.6a of the 2009 Formula One Sporting Regulations."
Source: Brian Lawrence, at old Usenet group, rec.sports.formula1.
moderated