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If it's the latter, be sure to join us again tomorrow for third free practice and qualifying. We're live on these here pages from 12:30 BST.

Andrew Benson's FP2 report is now live. We'll also keep you up to speed on any possible punishments for Hamilton or Raikkonen.

Bye for now, and thanks for your company today.

Here's the moment Lewis Hamilton jumped the queue at the end of the red flag period.

Kimi Raikkonen had done likewise just moments earlier.

"That kept us on the seats of our toes," says Eddie Jordan in summing up second practice.

So, even though he finished that session in the pits it is Nico Rosberg who ends FP2 on top with a best time of 1:34.647.

Team-mate Lewis Hamilton is second just a tenth back, with the Ferraris of Kimi Raikkonen and Sebastian Vettel third and fourth, half a second in arrears.

The rest of the top 10 is completed by Bottas, Ricciardo, Maldonado, Nasr, Kvyat and Massa.

Lewis Hamilton is under investigation for "failing to leave pit lane correctly" after that red-flag period.

Kimi Raikkonen will also be investigated for the same offence.

Replays show both men took a few liberties exiting the pit lane, passing stationary cars ahead.

Rosberg leads but he's in pits.

Can anyone unseat him?

Engineer to Nico Rosberg: Nico, box, box, box, we see something we don't like on the telemetry.

Lewis Hamilton among the cars heading straight out. What can the Mercedes man do in the last five minutes?

The stewards' office has confirmed it will investigate that tangle between Vettel and Perez at the end of FP2.

Sebastian Vettel: "I had a failure - a brake failure - and then Perez took my wing off. Unbelivable."

The German reports a braking problem having just left the pits, and as he limps into the first turn the Force India of Sergio Perez sweeps across him, damaging his front wing and leaving debris on track.

Prathap Krishnan: The one I miss most from recent times is Alonso and Webber. Good, hard, clean racing... highly understated too.

Ross Arnold: Schumacher and Hakkinen for me, great drivers, great rivalry, great respect.

Sam Leaver: It HAS to be Senna v Prost. Out-and-out class v political mastermind.

No, not a hip-hop act, but rather a solution which help teams track the behaviour of airflow across a car's bodywork.

It's normally used in pre-season. The fact it's smeared on the McLaren at the fourth race of the campaign perhaps gives some indication of the trouble the team is in.

As Mercedes have indicated below, long runs are very much the order at the moment - both on the soft and medium tyre.

The soft tyre is proving substantially quicker than the medium in the Bahrain heat and the teams will want to spend as much time as possible on the softer rubber come Sunday.

Tyre management the key to victory? Where have we heard that before?

Image source, Getty Images

Mercedes on Twitter: Lots of long runs underway now. ROS on Option on his 10th lap, likewise HAM on Prime. Getting deep into it here at #BahrainGP

1. Rosberg, 2. Hamilton, 3. Raikkonen, 4. Vettel, 5. Bottas, 6. Ricciardo, 7. Maldonado, 8. Nasr, 9. Kvyat, 10. Massa.

That random Star Wars reference of a few moments ago reminds me of an amusing tweet doing the rounds today, in which some wag has taken a still from the new Force Unleashed film and mashed it up with our favourite Venezuelan F1 pilot.

Image source, Twitter