LIVE coverage of the F1 Malaysian Grand Prix - race begins at 9:00am GMT on Sunday.

Sutil has stopped stock-still on the final turn, with no marshals in evidence to eliminate that little obstacle quite yet.

Yes, Hamilton's in, and meanwhile Vettel has recorded the fastest lap so far - 1:44.779.

Rosberg makes his second pit stop, replacing the medium tyres in a straightforward change, and Hamilton will be in at the end of the lap.

Correction - Ricciardo moved down to fifth with that earlier pit stop, but he'll be after Hulkenberg very shortly.

And Daniel Ricciardo puts in the fastest lap so far - 1:45.831. He's still in fourth, mind.

Accordingly, Hamilton is told that there are clouds forming and a threat of rain.

It's still sunny and dry on the track - but the radar forecast is predicting rain. Keep an eye on those conditions.

Ricciardo's in for a switch to the hard tyres.

Hamilton's carving his way through to lap the lower orders as Alonso heads into the pits for his second stop.

So there may be a glitch with the Red Bulls, but the Mercedes are cruising.

There's a problem with the fuel-flow monitor on Ricciardo's car, which has failed completely - they're now using the back-up system.

The Mercedes one-two is looking very comfortable at the moment; they're still lapping extremely quickly.

Pastor Maldonado says he retired to save the engine and save the car. He doesn't know much about the collision incident as yet, so no light shed on that.

Hulkenberg is pulling away from Button in seventh place, but he's got a long way to go to catch Alonso, who has a five-second advantage.

Looking at the fuel consumption, Hamilton's just up to 40 per cent, while Daniel Ricciardo is the heaviest consumer so far - nearly past 43 per cent already.

"Keep doing what you're doing," is the content team radio message to Lewis Hamilton.

Hamilton's lead is nearly up to ten seconds over Rosberg now. Vettel is opening up his margin over Ricciardo.

Perez's team-mate Hulkenberg is in sixth after that brief spell in first place.

Sergio Perez, who didn't start the race, says there was a problem with the car's software, "very similar to the one we had in qualifying, every time I'm downshifting...a very frustrating weekend."

Ricciardo gets a verbal thumbs-up over the team radio for the way things are running and the car's fuel efficiency.

Vergne and his Toro Rosso are into the garage and their day is over.