y they need to chance the circuit layout?

yep. cars cannot get close enough through high speed turns...

but problem is after that still have the final fast corner. If me, i'd rather straight replace the final corner with that chicane

Hopefully, the Spanish GP will be a close race between a few racers..

Anyone with the new Spain circuit layout?

F1's governing body could be considering banning aerodynamic devices like winglets in a bid to improve the opportunity for passing, we have learned.

Drivers have complained more vocally than ever in 2007 as teams affix ever more efficient downforce-inspiring additions to their cars' bodywork, following the introduction of harder tyres and tighter controls on engine development.

But the resulting disturbed air left in the cars' wake has made it even more difficult for drivers to get close enough to launch overtaking attempts.

According to whispers in F1 circles, the situation has led the FIA to contemplate banning auxiliary bodywork additions like winglets and flick-ups, after Max Mosley revealed recently that a working group on this issue is already in place.

Some experts are suggesting that Ferrari could already be trying to pre-empt the FIA's action, thereby maximising development time for future models, by 'cleaning up' the sidepods of the F2007 with its updated car for the upcoming Spanish grand prix.

Williams' race driver Alex Wurz, however, told motorline.cc that he did not think the current direction of aerodynamic innovation had led to the difficulty of passing, compared to junior categories like GP2.

"The main reason is that the best drivers in the world are in formula one," he said, "and we make very few mistakes."

We need that Ferrari domination as soon as possible 

Over the past few days many people in the paddock have grown concerned that after analysis of lap times in last week's Barcelona test, it looks like Ferrari may have improved the pace of its car by at least half-a-second a lap, and some even suggesting it could be closer to a full second. Reigning champion Fernando Alonso is aware of that and warned that the red cars will be difficult to beat.

"Catching them will not be easy because they've been developing their car a lot," Alonso told the El Pais newspaper. "McLaren needs to find something in the next few months that catches Ferrari out in development and gets us ahead. That's what we're working on."

"In last week's test we tried various things that will give us maybe three tenths per lap, but I'm sure Ferrari will also have found that time," he warned.

Scuderia Toro Rosso's cars have had a significant update since the last round in Bahrain according to the team's chief engineer, Laurent Mekies. The team hopes the updates will help it move up the order after a difficult start to the season.

"Like most teams, after the first three grands prix, we have a significant upgrade to our aerodynamic package and the major element of our update is a new rear wing," says Mekies. "Also part of the aero package update are new side pod wings. These are the two elements easy to see from the grandstands. In addition, the main aspect of our aero update is one that is harder to spot, but that we believe is as important as the more obvious items: we have paid very close attention to the quality of all components that affect the aerodynamics on the car. As everyone knows, we really had to rush simply to get parts ready for the first three races and the price we paid for rushing was that the quality level was not up to the standard we wanted. Now, we have worked on the aero quality of the parts, which involves ensuring that there is a better fit between all the bodywork components."

While the aerodynamic modifications are the most obvious changes on the Toro Rosso cars, work has also been carried out in other areas. "We will also have some new mechanical parts that increase our flexibility when it comes to working on the car, giving us more set-up options," says Mekies. "Over the first three grands prix, we had two reliability failures in the races. When you start the year with three flyaway races, you have to come up with interim solutions to fix reliability issues, while now we believe we have worked out proper solutions for the faults that caused the two retirements we have suffered to date."

The main reason why cars couldn't overtake is due to the aero changes FIA introduce when they raised the front wing to reduce aero efficiency. Now they want to reduce aero efficiency again and wants to improve overtaking? they are crazy

F1 cars are meant to go fast, and they are suppose to be the most expensive car on the planet. FIA is spoiling everything...

Ferraris have a history of winning on the debut of their new cars right?

well i beg to differ, the main culprit is the rear wing and additional winglets just like in the article quoted by virgil. You see, a F1 car left a turbulence or dirty air at the rear of the car. As a result, the following cars' aerodynamic setup is compromised.