Ireland produced the performance that their whole nation had been waiting for on Saturday as they defeated old rivals England 24-8 at Aviva Stadium.
Declan Kidney's side were arguably three gears up from their showings in earlier rounds and consequently stunned the Grand Slam chasers, with tries from Tommy Bowe and Brian O'Driscoll sealing a much-needed win to lift team morale.
England in contrast were not quite at the races and will now face a slightly anxious wait to see how France and Wales pans out in Paris. A points difference of 26 points is the task for Wales if they are to claim the Six Nations crown at the death.
A recalled Jonathan Sexton was deadly in front of goal for the fired-up Irish and struck four penalties in all while the score for O'Driscoll brought his total championship try tally up to a record 25.
However a large amount of credit for the victory must go to their back-row of Jamie Heaslip, Sean O'Brien and David Wallace, with the latter duo immense both in contact and in the loose.
England seemed confident at kick-off, although Ireland's defence immediately held up well and they soon won a penalty after their pack dominated the opening scrum.
They won another too when England strayed offside at a line-out after six minutes, with Sexton kicking three points from in front of the posts. 3-0 it was to Ireland.
Martin Johnson's side lost promising possession when trying to break through the midfield soon after, and although Ireland's counter ended with a knock-on, their next brought a high tackle by an, at times angry, Chris Ashton on Sexton. He found the target and England found themselves 6-0 down after fifteen minutes.
Four minutes later Wallace ended the attempts of Ben Youngs to attack and the nine was then penalised at the scrum for knocking the ball out the hands of an opponent.
Sexton kicked for the corner and with territory established, Ireland worked the ball up and back down the line. Although O'Driscoll then crossed in the left-hand corner, Bowe's pass to the overlap was adjudged forward.
Still, there was the consolation of another three points for Sexton and the knowledge that they held the upper hand. It was to get worse for England.
Having been awarded a penalty in the 25th minutes that he would surely have normally taken, an out-of-sorts Tony Flood was found wanting with the boot.
Ireland pressed forward immediately and caught England flat-footed, with a busy Bowe this time making no mistake as he took a smart Sexton's pass to cross.
Sexton could not convert, but Flood could at least put England's first points on the board with a penalty just past the half hour. And boy did they need it.
They could not use that to fashion a response though; instead Wallace came close to scoring after England's backline were dispossessed dealing with a high kick.
Youngs had helped bundled Wallace into touch but he was then sin-binned for throwing the ball into the crowd and preventing the quick throw. Sexton kicked his fourth, with Wallace almost crossing one minute before the half time interval.
England appeared just as nervous at the start of the second half as Ireland piled on more heat, although they failed to make the man advantage pay off. But with Danny Care replacing Youngs it didn't matter as O'Driscoll picked up a loose ball to cross in the left-hand corner after 46 minutes, with Sexton converting.
Ashton then burst for the line but his final pass found Gordon D'Arcy. However, Ireland gifted their opponents a try on 52 minutes after a line-out went awry and Thompson took advantage, England's record-cap hooker racing over for a try.
Jonny Wilkinson added the two and it was around this time that England finally appeared to get their act together and consistently apply pressure themselves.
Ireland's defence remained unbreached, however, and with heavy rain falling, the hosts got some respite when Care struggled to control the ball on the wet surface.
Ireland remained ahead on territory in the closing ten minutes and try as England might, their increasingly tired-looking attacks never looked likely to prosper.
Victory was celebrated like a championship for Ireland but who can blame them? Success against their old foes and depriving them of a Grand Slam, the Six Nations title?
Man-of-the-match: Leinster flanker Sean O'Brien was once again immense for Ireland with his carrying strength killing England. David Wallace and Jonathan Sexton also deserve a big mention for their efforts but captain and centre Brian O'Driscoll gets the gong for his all-action showing that saw him become the top try-scorer in Five/Six Nations history.
The scorers:
For Ireland:
Tries: Bowe, O'Driscoll
Con: Sexton
Pen: Sexton 4
For England:
Tries: Thompson
Pen: Flood
Ireland: 15 Keith Earls 14 Tommy Bowe, 13 Brian O'Driscoll (capt), 12 Gordon D'Arcy, 11 Andrew Trimble, 10 Jonathan Sexton, 9 Eoin Reddan, 8 Jamie Heaslip, 7 David Wallace, 6 Sean O'Brien, 5 Paul O'Connell, 4 Donncha O'Callaghan, 3 Mike Ross, 2 Rory Best, 1 Cian Healy.
Replacements: 16 Sean Cronin, 17 Tom Court, 18 Leo Cullen, 19 Denis Leamy, 20 Peter Stringer, 21 Ronan O'Gara, 22 Paddy Wallace.
England: 15 Ben Foden, 14 Chris Ashton, 13 Matt Banahan, 12 Shontayne Hape, 11 Mark Cueto, 10 Toby Flood, 9 Ben Youngs, 8 Nick Easter, 7 James Haskell, 6 Tom Wood, 5 Tom Palmer, 4 Louis Deacon, 3 Dan Cole, 2 Dylan Hartley, 1 Alex Corbisiero.
Replacements: 16 Steve Thompson, 17 Paul Doran-Jones, 18 Simon Shaw, 19 Tom Croft, 20 Danny Care, 21 Jonny Wilkinson, 22 David Strettle.
Referee: Bryce Lawrence (New Zealand)
Assistant referees: Nigel Owens (Wales), Tim Hayes (Wales)
Television match official: Giulio De Santis (Italy)
Line-out accuracy and goal-kicking had let down Italy early on as Leonardo Ghiraldini and Mirco Bergamasco struggled to find their range.
It was by no means a performance to savour, but the result will be a relief for the home side. It was another tight contest that could so easily have gone the way of the Scots, but England held on.
Controversy will forever be attached with this March 12 fixture as a Mike Phillips score that should never have been awarded will leave the whole of Ireland fuming on Saturday evening.
The defending Six Nations and Grand Slam champions outscored their hosts two tries to one but made far to many errors, allowing Mirco Bergamasco to slot six penalties and convert Andrea Masi's try to hand Italy the biggest victory in their rugby history.
Jamie Heaslip, Eoin Reddan and Ronan O'Gara touched down for the visitors as Ireland kept their Six Nations title hopes alive -- although based on this performance it's difficult to see them lift the championship trophy next month.
A Ben Foden try early in the second half proved to be the difference between two very evenly-matched sides in a clash high on intensity but littered by errors.
Ten points were missed from the tee by wing Mirco Bergamasco and replacement fly-half Luciano Orquera in a result that will hurt Italy.
Ireland gave a massively improved performance than the one that saw Italy come so close to causing the upset in the championship's history.
Under-fire coach Warren Gatland will be relieved after his team did enough to upset the formbook and put their championship campaign back on track.
It was a showing that will add weight to talk of a possible Grand Slam as sublime running and support lines left the Azzurri with no answer.
Unlike the nightmare against Australia the last time les Bleus were at the Stade de France, Marc Lièvremont's side were all singing from the same hymn sheet as they scored four eye-catching tries.
Played under glorious sunshine, this was always going to be a banana skin that needed avoiding for Ireland. And boy was it difficult to negate.
Much of the midweek talk had been about the props, line-out and that man Dylan Hartley but in truth those three facets of this one were swamped by the men out wide as Chris Ashton's brace of tries saw the Red Rose silence a hostile Cardiff.
It was a fine advert for this historic spectacle, not least because the Baa-Baas were celebrating their 120th year. It was a very happy birthday.
It wasn't pretty, it wasn't ugly either -- but it was effective as fly-half Jonathan Sexton contributed seventeen points with the boot to keep his untroubled side ahead of an uninspired Pumas outfit.
Les Bleus were booed off the field by their home crowd as a second-half meltdown saw them concede a whopping 46 points after the break.
Dan Carter broke Jonny Wilkinson's world Test points record at the Millennium Stadium as the All Blacks completed their third Grand Slam tour of Britain and Ireland in six seasons.
After the 49-3 defeat by New Zealand and a 21-17 win over South Africa, Scotland were seeking a fifth win from six Tests to finish the year on a high.
South Africa dusted themselves off from a miserable afternoon at Murrayfield to silence their critics with a powerful performance that made up for last week's effort ten-fold.