Final qualifying positions:
1. Fernando Alonso (McLaren)
2. Lewis Hamilton (McLaren)
3. Nick Heidfeld (BMW Sauber)
4. Kimi Raikkonen (Ferrari)
5. Nico Rosberg (Williams)
6. Ralf Schumacher (Toyota)
LATEST ACTION (all times BST)
To get involved, text us on 81111 (UK users only) or contribute to 606
1412: Lewis Hamilton plays it dead straight in the press conference, although - reading between the lines - you can detect his unhappiness at what went on in the pit-lane.
"There's not really much to say - you saw what happened," he says.
Asked later whether he was aware of the reasons for being held up behind Alonso, he doesn't miss a beat before replying: "I think you should ask the team that."
1408: There is a public show of unity as Fernando Alonso and Lewis Hamilton put their arms round each other and pose for the photographers. Whether it's all quite as happy families behind closed doors is another question.
1401: Fernando Alonso gets pole position by a tenth of a second from his team-mate in a thrilling finish. But there seems to be a suggestion that Alonso deliberately dilly-dallied, for some 10 seconds, while waiting in the pits to hold up his team-mate.
Alonso's failure to get away quickly meant that Hamilton, who was queueing behind him, was unable to get out on the track in time to complete a last flying lap.
McLaren chief Ron Dennis looks somewhat grim-faced when questioned about it. "We'll discuss it later once it has been discussed within the team," he says. The plot thickens.
1400: A delay in the McLaren pits costs Lewis Hamilton his chance of another flying lap.
1358: Both McLaren drivers beat Kimi Raikkonen's time, with Hamilton taking provisional pole, as does BMW's Nick Heidfeld. All the main contenders will have one last flying lap though.
1355: Kimi Raikkonen goes quickest, but his time is in the one minute 20 seconds, and McLaren will fancy their chances of getting past that time.
1351: Breaking news from the pits from BBC Radio Five Live reporter Holly Samos is that there was a catastrophic breakdown in communication between Felipe Massa and his Ferrari crew.
Massa did not have enough fuel on board to complete the lap he was on which was why he was told to come into the pits and switch off his engine for the mechanics to sprint down the road and push him back to be refuelled. A potentially very costly error there from Ferrari.
1345: The final session gets under way, and the race is on for the vital pole position.
1343: Felipe Massa's problems here in qualifying may well have condemned him to a weekend out of the points. The Hungaroring is notoriously difficult to overtake on, so 14th on the grid is not where you want to be.
Anyone wanting to cheer the Brazilian up might want to point out that Jenson Button won last year's race from 14th on the grid, although that was in the rain.
1340: Red Bull's David Coulthard just misses out on a place in the top 10, finishing the session in 11th place.
Coulthard will be joined on the sidelines by Heikki Kovaleinen, Alexander Wurz, Anthony Davidson and Vitantonio Liuzzi, as the top 10 takes shape.
1337: The answer, unfortunately for Ferrari, is no. Felipe Massa will start from 14th place on the grid after terrible understeer problems on his flying lap undermine his hopes.
1-0 to McLaren, it would seem.
1335: Felipe Massa is out on the track in the nick of time and has just enough time to complete a flying lap and get himself back in the top 10. Can he do it?
1332: There's a big problem for Felipe Massa as his car comes to a standstill in the pits. He is being pushed back to the pits and the time is running out to get him back out on the track before the end of the session. he's running in 14th place so he really needs to get going.
1330: Lewis Hamilton is again the man with the pace in the second session, setting another fastest lap with a time of 1:19.301.
Ferrari are slightly off the pace at the moment, while McLaren's Fernando Alonso is looking fairly comfortable without pulling up any trees.
1322: "Nothing short of first or second will do for Hamilton today. I get the feeling that if he falls behind he will lose all the confidence and momentum that has served him so well to date."
Welsh_Auteur via text
1320: A disconsolate Button is at a loss to explain his slow performance in the first sector. He jokes that he will be doing a rain dance overnight in the hope of a repeat of last season's conditions and victory.
1316: Jenson Button scrapes into 16th place, only for Vitantonio Liuzzi to swiftly condemn him to an afternoon off. Button will start the race in 17th place although he does at least gain the satisfaction of out-qualifying his team-mate Rubens Barrichello.
The other drivers to exit the qualifying session at the first time of asking are Super Aguri's Takuma Sato, Toro Rosso debutant Sebastian Vettel and Spyker duo Adrian Sutil and Sakon Yamamoto.
1315: The big boys are all safely into the top 16 that will go through to the next session, but Jenson Button is really up against it in his Honda.
1309: Lewis Hamilton has laid down the gauntlet with the fastest lap of the weekend so far.
1308: Lewis Hamilton is out on the track now and is by far the quickest so far in sectors one and two.
1305: None of the big guns are out just yet, as Alexander Wurz sets the early marker in the first session.
1300: It's a pretty hot day in Budapest, with the track temperature reaching 39C as the qualifying gets under way. The wind is also likely to be an issue for the drivers.
1245: Fernando Alonso and Felipe Massa were caught on camera at the end of the European Grand Prix engaging in what might be politely dubbed a frank exchange of views at the end of the European Grand Prix.
Lots of finger wagging and sarcasm in evidence. This title run-in looks to be getting very tasty indeed.
1240: What price Jenson Button following up his first - and, to date, only - Grand Prix win this weekend? The Honda driver broke his duck at the Hungaroring last year, but the chances of him repeating the feat this time around seem remote to say the least.
Button was a distant 18th quickest in the final practice session, and doesn't look like he will be challenging at the top end of the grid this time around.
1235: "I don't think it's as black and white as whoever's on pole will win the race."
vertigo_timbo via 606
1230: The conditions in Budapest are, as usual, hot and dusty, placing great importance on the driver's ability to get the most out of his tyres.
1220: "At the start of the season, if you'd have offered Lewis Hamilton a two-point lead going into the Hungarian Grand Prix he'd have bitten your hand off."
BBC Radio Five Live commentator David Croft
1200: Afternoon all, there's an hour to go before the start of qualifying for the Hungarian Grand Prix at the Hungaroring, and all the signs are that it will be another tight battle between McLaren and Ferrari.
After all the spying row tit-for-tat talk in the media over the last few weeks, it will be a relief for the action to get back under way on the track.
There is certainly no love lost between Formula One's two dominant teams at the moment, and this promises to be a fascinating battle for supremacy.
Ferrari's Felipe Massa went fastest in the final free practice session earlier on Saturday, but the Mclaren duo of Fernando Alonso and Lewis Hamilton were hot on his heels.
You can send in your thoughts via text and 606, and follow all the twists and turns of the qualifying battle here.
And, in case you are unclear, here are the rules of qualifying again:
After the first 15-minute session, the slowest six cars will be eliminated. Six more cars will then be eliminated during a second spell before the remaining top 10 cars battle it out for the grid positions.