Neath-Swansea Ospreys 25 Leinster 36:Leinster managed to lift some of the gloom that has descended on Donnybrook over the weekend with their fifth successive Celtic League win this evening.
The result lifts Gary Ella's side to fourth in the standings and featured six Leinster tries, including two apiece from Brian O'Driscoll and Gordon D'Arcy.
Christian Weener and John McWeeney scored the other two tries with scrum-half Brian O'Meara kicking three conversions.
Felipe Contepomi, who is likely to miss all six of Leinster's Heineken Cup pool matches following an administrative blunder, made his debut for the province and was at the heart of much of the side's attacking work.