@RB: Vettel is two tenths up on Hamilton at the moment.
@VS: It's all very strange, isn't it. I would assume Sauber is confident there will be no ramifications but who knows.
Button is out there on track. His data now doubly important with Magnussen putting the other car in the wall.
Raikkonen is lighting up the timing screens - he's on the soft tyre so we can expect him to go top.
Raikkonen lowers the benchmark to a 1:28.842 on the soft tyre.
His team-mate Vettel is also out there on soft tyres.
"Front was a little bit better now but not ideal. That was not a very good lap anyway but the right direction," reports Raikkonen.
Vettel jumps back above his new team-mate by four tenths.
@VS: I think they will. Missing these two sessions was always likely after the team arrived with no testing under its belt.
@Arvind: Mediums. FP1 is prime tyre only because the teams save their qualifying simulations for FP1.
@DonovanFroon: Yes, FP3 as well.
@VS: We'll see. Instead of focusing on the negatives we should be happy the team returned to the grid.
Rosberg has moved to within six tenths of Vettel's benchmark. Worryingly for everyone else he's still on the medium tyre.
Perez leaps into sixth on the soft tyre, still 2.5s down on Ferrari.
McLaren has advised Button to end his current medium tyre run so the team can put soft tyres on for a qualifying sim..
@ChristianLaviolette: There's nothing major on any of the front runners. Merc certainly doesn't have anything huge from what I've seen.
We've got some smoke coming from the back of Ericsson's Sauber. "Something is broken. Left rear suspension I think - puncture or something," is the Swede's feedback. He's crawling around the circuit.
Ericsson still limping around the circuit. The wheel is looking like it might just come off the car at the moment.
Replays show Ericsson getting wide on the kerb as he joins the start finish straight. The problem started immediately afterwards.
Grosjean very nearly collected the Sauber later in the lap as well after having a wobble.
It'll be a race against the clock to get him out but let's see.
@malik: Maybe Maldonado is contagious?
@timot: I would say so - though who knows how long he could stay in F1 with sponsorship.
@p3t3r: Laurence is in the paddock in Melbourne.