45'
Arshavin and Wilshere celebrate Arsenal's opener.
45'
 A change for Villa, Pires off, Delfouneso on.
46'
We begin again...
47'
Villa will still have Houllier's harsh words ringing in their ears and they certainly look a little more positive with two up front now.
47'
Carew is looking very loose up top. Nothing is sticking to him.
48'
That's better from Villa as Young swirls in a deep cross that Sagna has to flick to safety.
49'
Comment from Kevin Palmer at Villa Park: It is a little alarming to see how far Villa have fallen since the departure of Martin O'Neill. I know they have injury worries just now, but this has been a damage limitation effort from the first whistle, which is not good for a team playing at home. Delfouneso is on now, so at least they are showing a little more attacking intent.
50'
A few half chances around the edge of the box for Villa before Arsenal break away. Its quite an open game now.
51'
 GOAL A beauty from Clark! He chests down and hammers a volley into the top corner. A peach.
52'
A few things to note about that, firstly, Clichy just dropped off as soon as Clark chested the ball down. Then, a still dazed Carew was standing right in front of Fabianski, who had to crane his neck to see the shot.
53'
That will giver Villa hope, and they have been much better in this second half. It all begs the question, why were they so bad in the first?
54'
Another dangerous looking cross from Young as Villa continue to improve.
55'
 GOAL Villa might be better but they are two goals behind again after Rosicky feeds Chamakh and he pokes the ball under Friedel.
56'
That could well knock the stuffing out of Villa. They had battled back, gave themselves hope only to be torn apart by a simple through ball.
58'
Nasri very nearly offers Jack Wilshere a sight of goal but Dunne intervenes.
59'
Another opening as Wilshere gets down the left channel but his cross is cut out by Friedel with Chamakh circling.
60'
Space for Nasri again and his cross is hammered over the bar by Arshavin. Difficult chance.
61'
A silky run from Arshavin is ended by a fierce Warnock tackle.
63'
Arsenal have reverted back to their quest to fashion the perfect goal with intricate little passes in and around the penalty area.
64'
Now the travelling fans break out the 'ole's' as Arsenal play keep ball.
65'
A decent run from Delfouneso comes to an end after Koscielny's tackle.
67'
 Stephen Ireland comes on for the ineffectual Carew.
67'
Space for Young, who is running at Arsenal's defence but his simple pass wide to Warnock was dreadful and the crowd groan as one.
68'
Space down the left for Downing who flashes a cross past Fabianski.
69'
Clark has missed a great opening for his second. A cross is cleared right to Clark who fires wide from ten yards from a tightish angle.
70'
Good cross from Ireland and Koscielny nods behind for a corner.
71'
 GOAL Clark does get his second! Dunne nods the corner goalwards and Clark's flick takes it in off the bar. Hope again for Villa!
72'
That has brought the crowd back to life. Villa going hell for leather now. Expect more goals.
73'
Another mazy run from Arshavin but his eventual shot is well wide. He's been in decent nick today.
74'
Great work from Nasri, who beats Dunne to a ball down the right. His cross is too strong but right across the face of goal. Chamakh should have gambled.
76'
 Chamakh gets a card for a late tackle.
76'
Warnock's free kick is met by Dunne but it loops into Fabianski's hands.
77'
Chamakh nearly got in on goal there but for a swift Friedel intervention.
78'
Now Downing charges down the left and wins a throw.
79'
A high boot from Clark flicks Koscielny's head. Arsenal free kick.
80'
Arsenal sitting deeper and deeper and playing on the counter.
83'
Great ball into the box from Downing and Squillaci's flick hands Villa a corner.
84'
Dunne rises high again but once more his header is right at Fabianski. Three Villa players were close but couldn't get a touch.
84'
Arshavin does well to win the ball and get to the byline but his pull back for Wilshere is heavy and the youngster blasts over.
85'
 Nasri goes off and Kieran Gibbs comes on. Then Arshavin makes way for Denilson. Villa make a change too as Chris Herd replaces Bannan.
86'
Gibbs tries to latch on to a ball to the back post but catches Friedel on the head as he hurdles him.
87'
Gibbs wastes a little time in the corner flag before winning a corner.
88'
Villa win a free kick as the corner comes in. Some shoving in the box.
89'
Arsenal just trying to see the game off now before Chamakh forces Warnock into a hurried clearance.
90'
Four added minutes...
91'
Great tackle from Koscielny as Dunne looked to strike on goal from his own knock down. Dunne playing up front now.
92'
Villa going long and Squillaci and Koscielny getting up to try and compete with Dunne.
93'
 GOAL It was always likely and Wilshere has potted his first Premier League goal for Arsenal. Denilson's shot fell to Chamakh, who lobbed the ball over Friedel for Wilshere to nod home. Game over.
94'
 Rosicky goes off and Djourou is on.
94'
FULL TIME Arsenal deservedly win and they go top of the table, for a few hours at least. They always looked menacing, while Villa paid for a miserable first half display. Four good goals and three good points.