@Cin: Yep, we haven't heard anything from Ferrari in a while. They're not the best at communicating with the media at the best of times, especially not when there are problems...
We're approaching the final half hour and Lewis Hamilton is on an absolute flier...
...But the three-time world champion backs off at the final sector, meaning we all got our hopes up for nothing. Hamilton yesterday remarked about how hard these tyres are and that they allow for much more pushing every lap. That would suggest that statement is true as he's been out there for a while.
@JasonArellano: They have been out for 29 laps. It's a better start this morning than it was yesterday. But then anything more than one lap would have been!
The track is occupied by just Hamilton and Verstappen at the moment.
From Laurence trackside: "Hamilton has just come past on soft tyres and was flat through Turn 9. The Toro Rosso appeared to ease off full throttle but was on much older medium tyres. Hamilton wasn't flat every time, but it's definitely possible and seems to depend on what the team/driver are trying to achieve from each lap."
And another update: "Lewis flat again on the last lap. He did one lap on it, one off, one on it."
Magnussen goes green in all three sectors and climbs to fifth. I didn't see when he flashed past but I suspect he's moved on to the soft tyres. Will confirm next time he flies past the media centre.
Sounds like more problems at McLaren...
Update from the team: "We lost power to the PU. At the moment we don't know what has caused the issue. We are currently changing the PU in order to investigate fully and identify the cause. We will update you when we have further information."
Laurence from trackside says the Ferrari has not been flat through Turn 9 on Kimi's most recent run, but the Finn is on medium tyres and not really pushing. Magnussen was pushing on his latest lap and came through T9 as a tail wind was blowing, shark fin and T-wing both wobbling a fair bit.
@Ron: There was an exhaust issue which kept him out of action for the whole afternoon.
We're into the final 20 minutes of the morning session.
In all that Honda drama, Hamilton has improved again, lowering the benchmark to 1:20.863 - by far the quickest time we've seen in testing so far.
Laurence says: "Lewis absolutely on it on the super-softs through Turn 9. Carried huge speed but nearly lost the rear on the exit as he went over the kerb."
So, a super-soft lap for the world champions.
@jskathirvel: At this stage the team's will only have one car developed.
Laurence says: "Big twitch for Kvyat in Turn 9 on mediums. Clearly pretty tricky this time round and still carried a lot of speed.
"Lewis had less drama this time round and still carried a lot of speed."
@Mcf1: This question was asked to McLaren boss Eric Boullier in his media session yesterday. It's a very good point - it seems to be basic problems hurting Honda at the moment.
Oh hello. We have a red flag....
It's Ocon who has stopped at Turn 10. Laurence reports a puff of smoke at the rear as Ocon came through Turn 9. Says it "smelt pretty bad".
@JasonArellano: Read downwards from here from the answer! Laurence has been stood at that corner for half an hour.
That red flag might just see us through to lunch. They'be got some seven minutes to remove the Force India from the circuit.
@Iain: That's unclear at the moment. The team's update said it will send more information when it has some. Fortunately they have a one-hour lunch break to follow, so that will mitigate some of the lost running time, but looking at a minimum of half a day lost, and that's a good estimate.
We've hit midday but there's a note flashing on the timing screen - session extended by five minutes.
There's some noise in the pit lane so we'll get a handful of laps before lunch.