Peter Horne went over for the try that clinched the game for Glasgow

Leinster's 28-match winning streak in regular-season games at the RDS was brought to an end in the RaboDirect Pro12 clash with lock Nick Campbell, who touched down for a first-half try, and place-kickers Scott Wight and Duncan Weir completing Glasgow's scoring.

Isa Nacewa's penalty gave Leinster a 3-0 lead inside three minutes but despite out-half Ian Madigan and Nacewa showing glimpses of their attacking prowess, they faltered in the final third.

Glasgow had an opportunity to level the scores after 12 minutes but Wight's penalty from halfway cannoned back off the right post.

Leinster responded with another period of sustained pressure, yet a second Nacewa penalty was all they could show for being camped inside the Glasgow half for a 10-minute spell.

Wight made up for his earlier miss when he split the posts with a penalty from the right. Leinster were then left to rue their missed chances on the half hour when Campbell dived over after Leinster failed to clear their lines. Wight converted to give the Warriors a 10-6 advantage.

Leinster's stuttering attack finally crossed the whitewash approaching half-time. David Kearney broke into the Glasgow 22 and linked with Dominic Ryan who offloaded for Madigan to score by the posts. Nacewa added the conversion to give the home side a 13-10 lead at the break.

Glasgow's replacement out-half Weir and Nacewa exchanged penalties in the opening five minutes after the restart before play was held up for what looked like a serious injury to flanker Ryan.

Nacewa and Weir again traded penalties, following the sin-binning of Glasgow captain Rob Harley.

At 19-16, Leinster seemed to be in control but again they failed to convert their pressure into points. It came back to haunt them when, after great work by Stuart Hogg, Horne skated through the home defence for a 66th-minute try which Weir added the extras to.

Leinster recycled the ball well from a lineout after Madigan found touch but were thwarted by a resolute defence on a number of occasions as the Warriors held on for a fine victory.

Glasgow's opening try scorer Nick Campbell said: "Leinster are one of the top teams in Europe and they're the Heineken Cup champions and I don't think they've been beaten here for two years before now."

"But I think in the last 20 minutes the defence from us was exceptional.

"They put a lot of pressure on us and we didn't buckle. What we've been doing in the last few weeks has really come to fruition.

"We really came back in the second half and upped our game. We really put our game onto them and compounded it at the end.

"Everything you dream of as a child is to come to a place like this in front of 11,000. And winning really is the stuff dreams are made of.

"There is no real greater challenge in Europe bar a few places to come and win so it proves we can step up and deliver."