Matthew Hayden was fined and severely reprimanded after an ugly incident in which a glass panel in his team's dressing room door was smashed.

Meanwhile, Australian vice-captain and wicketkeeper Adam Gilchrist was also reprimanded for swearing as the pressure mounted on the home side to effect a 5-0 clean sweep of the Ashes series.

International Cricket Council match referee Wasim Raja fined Hayden 20 per cent of his match fee, estimated to be about $2,200, after the Australian opener was found guilty of breaching the ICC's code of conduct.

He was charged after breaking the glass as he returned to the dressing room following his lbw dismissal for just two in the third over of the home side's tense fifth Test run chase at the SCG.

Raja said the penalty was decided in light of Hayden's previously clean record.

"At the hearing Matthew Hayden admitted the offence and apologised for his action," Raja said in a statement.

Hayden faced a maximum penalty of being fined half his match fee.

Speaking about the Hayden incident after play, Australian coach John Buchanan said: "It's something that's unfortunate, you don't want to see that.

"The doors were closed and he just tried to get through the door, which he did, but the glass broke in the ensuing entree. But there was no bat throwing or anything like that."

Meanwhile, Gilchrist was charged with showing dissent at an umpire's decision by action or verbal abuse after he swore when his appeal for caught behind off batsman Steve Harmison from Brett Lee's bowling was turned down in England's second innings.

Raja said he warned Gilchrist about his future conduct.

"At the hearing Adam Gilchrist admitted swearing and expressed regret at doing so," Raja said.

Gilchrist also faced a maximum penalty of being fined 50 per cent of his match fee.

The incidents exemplified the pressure on the Australian team as it attempted to chase down a mammoth target of 452 for victory.

Hayden's dismissal came just two balls after batting partner Justin Langer was dismissed lbw by Andrew Caddick for three when replays clearly showed the ball was going down the leg side.

Another sore point in a disastrous day for Australia was an elbow injury to spearhead Jason Gillespie.

With the Australian bowling attack already severely undermanned in the absence of Glenn McGrath (side strain) and Shane Warne (dislocated shoulder), Gillespie slipped on some repaired foot marks on the pitch during his follow through while bowling in the second session today.

In a bid to break his fall with his left hand, he jarred his left elbow and bowled one more delivery before leaving the field for treatment, unable to finish his 19th over or return to play at all.

X-rays revealed there was no fracture but Buchanan said it appeared Gillespie may have suffered some ligament damage.

"He's getting a final assessment tomorrow and will be available to bat if required," Buchanan said.

Gillespie's misfortune was likely to mean the injury-prone paceman would sit out some of Australia's upcoming one-day matches.

But Buchanan said he probably would have been sidelined anyway as he was high on the waiting list for a rest.

"We're going to look at that format a little bit, looking at our quick bowlers and who is in need of possibly some rest," Buchanan said.

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