The Ashes: Usman Khawaja's controversial decision has Twitter abuzz

The third Ashes Test, which has seen the International Cricket Council (ICC) trial an independent television feed with the aim of improving its controversial Decision Review System, has controversy striking it yet again.

Barely two hours into the Old Trafford Test between England and Australia, Usman Khawaja was given out in shocking circumstances. The left-hand Aussie batsman was given caught behind by on-field umpire Tony Hill off the last delivery of the 23rd over by Graeme Swann.

Confident Khawaja took an immediate review as the matter now rested in third umpire Kumar Dharmasena's hands. Hot-spot, sound review and replays from all angles ensued. None showed anything that suggested Khawaja be given out. Dharmasena did the unthinkable though to given England a lucky break.

Australia, who had a great start, with Shane Watson and Chris Rogers adding 76 for the first wicket, found themselves in a tricky position at lunch on 92/2. Skipper Michael Clarke came in to replace the unlucky Khawaja.

DRS, designed to eliminate the "howler" by on-field umpires, has been at the centre of several controversial decisions in the first two Test of the Ashes, both of which England have won to take a 2-0 lead in the five-match series.

Meanwhile, Twitter is abuzz condemning the controversial decision:

Umpires protecting each other is the main reason DRS is causing controversy! - Scott Styris

That is a ridiculous decision by both the on & off field umpires. DRS creating yet more controversy. Any wonder players don't walk! - Alec Stewart

And people say you should Walk .... No chance when you get decisions like that... - Michael Vaughan

Feel for a young player who is trying to make his way in the game.... Really poor decision.... - Michael Vaughan

#ICC please explain the farcical decision of Usman Khawaja, players careers on the line here! - Tom Moody

That is an unbelievable decision what a joke by both on & off field umpires, covering each others backsides! - Tom Moody

DRS was introduced to eradicate the human howlers...humans are out to prove that no technology can eliminate human errors. - Aakash Chopra

I've just sat down to watch the test. That was one of the worst cricket umpiring decisions I have ever seen. - Kevin Rudd

Dharmasena was the 3rd umpire.. And he will umpire the next test!! Should be sacked! - Dean Jones

Players lose careers on the back of decisions like that. It may be harsh but the 3rd umpire should suffer a similar fate. - Paul Marsh