Davidson quickest in practice 2

Briton Davidson, 27, set a time of 1:31.353, which was the fastest of the day and was due largely to a cooler track temperature than in the morning session and a light fuel load in the test driver's car.

Ferrari's Michael Schumacher was the top race driver in second and was just 0.4 seconds slower than Davidson.

Williams' Austrian test driver Alex Wurz ended up third ahead of Schumacher's Brazilian teammate Felipe Massa, and world champion Fernando Alonso in a Renault. Toro Rosso's Italian driver Vitantonio Liuzzi completed the top six.

McLaren's flying Finn Kimi Raikkonen, who led the timesheets for eight minutes early on in the session, endured a nightmare start to the season when his McLaren stuttered to a halt with an electrical failure.

He was not the only expected front-runner to hit trouble as Italian Jarno Trulli also stopped out on the circuit a minute later when his gearbox broke.

BMW Sauber test driver Robert Kubica, who starred this morning by topping the times in first practice, was again right on the pace in the first half of the session.

But Poland's Kubica endured a hairy incident with half the session gone as his suffered a right-front puncture while entering the 115 kilometres per hour turn six.

He did well to control the car and was able to drive over the asphalt run-off area and back to the pitlane. He did continue.

There were plenty of incidents at turn 10 during the session - although none of them serious as the tricky double-apex turn caught out no less than six drivers during the hour.

Among the culprits were Michael Schumacher, Colombian McLaren driver Juan Pablo Montoya and Liuzzi.

Super Aguri's Yuji Ide finished the session at the side of the track following an apparent mechanical failure.

Pos  Driver        Team                     Time                  Laps
 1.  Davidson      Honda               (M)  1:31.353               28
 2.  M.Schumacher  Ferrari             (B)  1:31.751  +    0.398   15
 3.  Wurz          Williams-Cosworth   (B)  1:31.764  +    0.411   27
 4.  Massa         Ferrari             (B)  1:32.175  +    0.822   13
 5.  Alonso        Renault             (M)  1:32.538  +    1.185   13
 6.  Liuzzi        Toro Rosso-Cosworth (M)  1:32.703  +    1.350   24
 7.  Doornbos      Red Bull-Ferrari    (M)  1:32.926  +    1.573   24
 8.  Fisichella    Renault             (M)  1:33.215  +    1.862   14
 9.  Button        Honda               (M)  1:33.226  +    1.873   12
10.  Kubica        BMW-Sauber          (M)  1:33.244  +    1.891   26
11.  Klien         Red Bull-Ferrari    (M)  1:33.557  +    2.204    8
12.  Raikkonen     McLaren-Mercedes    (M)  1:33.577  +    2.224   11
13.  Montoya       McLaren-Mercedes    (M)  1:33.726  +    2.373   15
14.  Heidfeld      BMW-Sauber          (M)  1:33.848  +    2.495    9
15.  Jani          Toro Rosso-Cosworth (M)  1:33.900  +    2.547   24
16.  Speed         Toro Rosso-Cosworth (M)  1:34.284  +    2.931   22
17.  Webber        Williams-Cosworth   (B)  1:34.333  +    2.980    5
18.  Barrichello   Honda               (M)  1:34.384  +    3.031    9
19.  Coulthard     Red Bull-Ferrari    (M)  1:34.432  +    3.079    7
20.  Monteiro      MF1-Toyota          (B)  1:34.459  +    3.106   14
21.  Rosberg       Williams-Cosworth   (B)  1:34.953  +    3.600    5
22.  Trulli        Toyota              (B)  1:35.170  +    3.817   18
23.  Winkelhock    MF1-Toyota          (B)  1:35.686  +    4.333   24
24.  R.Schumacher  Toyota              (B)  1:35.898  +    4.545   11
25.  Villeneuve    BMW-Sauber          (M)  1:36.264  +    4.911    8
26.  Albers        MF1-Toyota          (B)  1:36.314  +    4.961   16
27.  Sato          Super Aguri-Honda   (B)  1:37.588  +    6.235   19
28.  Ide           Super Aguri-Honda   (B)  1:39.021  +    7.668   21

All timing unofficial