This the fastest lap for each driver and their average speed in the Malaysian GP, I got it from Planet F1. Look at the top 3, sure looks like Williams and BAR has up their game since Melbourne. Renault has a good speed too..
About the lap times, it clearly shows that Schumi isn't the fastest anymore, at least the gap is shrinking
Fastest lap times:
01 JP Montoya Williams 1:34.223 Lap 28 Ave speed 211.782
02 M Schumacher Ferrari 1:34.819 Lap 6 Ave speed 210.451
03 J Button BAR 1:34.967 Lap 28 Ave speed 210.123
04 J Trulli Renault 1:35.039 Lap 12 Ave speed 209.964
05 K Räikkönen McLaren 1:35.156 Lap 12 Ave speed 209.706
06 R Barrichello Ferrari 1:35.350 Lap 7 Ave speed 209.279
07 R Schumacher William 1:35.607 Lap 10 Ave speed 208.716
08 T Sato BAR 1:35.679 Lap 13 Ave speed 208.559
09 D Coulthard McLaren 1:35.852 Lap 26 Ave speed 208.183
10 F Alonso Renault 1:35.888 Lap 7 Ave speed 208.105
11 O Panis Toyota 1:35.951 Lap 23 Ave speed 207.968
12 C da Matta Toyota 1:36.544 Lap 22 Ave speed 206.691
13 F Massa Sauber 1:36.570 Lap 7 Ave speed 206.635
14 G Fisichella Sauber 1:36.675 Lap 54 Ave speed 206.411
15 M Webber Jaguar 1:36.922 Lap 9 Ave speed 205.885
16 C Klien Jaguar 1:37.031 Lap 12 Ave speed 205.653
17 N Heidfeld Jordan 1:37.433 Lap 15 Ave speed 204.805
18 G Pantano Jordan 1:39.527 Lap 41 Ave speed 200.496
19 G Bruni Minardi 1:39.911 Lap 11 Ave speed 199.725
20 Z Baumgartner Minardi 1:40.123 Lap 12 Ave speed 199.302