McLaren Honda's Jenson Button was philosophical after more mechanical problems halted him in qualifying for the Bahrain Grand Prix on Saturday.

Button ground to halt at the start of Q1, the third time this weekend he has had issues as he was also hit by problems in FP1 and FP2 on Friday.

It means the Briton will now line-up last on the grid for the race, although he maintained his pace in FP3 - when he was 11th - and the fact team-mate Fernando Alonso made it through to Q2 and will start in P14, was at least something positive for the struggling outfit.

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"We're racing drivers and you want to drive your racing car as fast as you can," Button said.

"Obviously when you are limited to running in P1 and P2, with two stops on the circuit, it's tough. But how things felt this weekend, in terms of driving the car this morning, it felt pretty good. I was quite happy with it, I ended up 11th. It's still only P3, but it was a good feeling.

"Also with Fernando in qualifying, our best qualifying getting into Q2, you have to look at the positives.

"You would say we're definitely making progress, we're improving every race we go to, but just a tough weekend on my side of the garage."

So what exactly occurred in Q1?

"I don't really know what happened," Button added. "It felt a bit similar to what occurred on Friday morning when everything shut down on the car. There was a loud bang, so I pulled over and got out...."

McLaren is still investigating the problem, but McLaren sporting director, Eric Boullier insisted it is just "glitches" that keep stopping the car and the team currently thinks the issue in Q3 was electrical.

Meanwhile, Button is hopeful he can have a reasonable race, providing the car is reliable.

"We knew it was going to be a hard start to the year, and it has been, but, even so, there are more positives than we thought there would be. Looking ahead to tomorrow, our race pace is likely to be not too bad. So hopefully we can sort out our reliability glitches ahead of tomorrow and have a decent race," concluded the 2009 Formula 1 World Champion.