Leinster collected a deserved 32-6 Magners League victory over Ulster in the RDS on Sunday.
Second-half tries from Fergus McFadden, Leo Cullen, Rocky Elsom, and Simon Keogh allowed the home side to secure a win that puts further pressure on table toppers Munster.
It took a long time for anything to happen in the game, as there were only three scores in the first-half - all of which were penalties.
Felipe Contepomi was successful with two place kicks, but missed his first effort, while Ian Humphreys missed one and scored one in between screwing a drop goal wide.
After the interval there was a noticeable change in how Leinster were playing as Elsom and Shane Jennings started to ruck at a furious pace that shook the Ulster forward line.
The visitors started to miss some tackles, and that was exploited when Gordon D'Arcy broke away before passing to McFadden, who dived over the line in the top corner for the first try.
Leo Cullen got a second try just minutes later when he barged through two white shirts after a swift pass from Chris Whittaker.
Ulster changed kickers with Clinton Schifcofske kicking a penalty, but it failed to inspire the away team as there were soon conceding another try when Elsom benefitted from strong running by Isa Nacewa and Shane Horgan.
Just as Robbie Diack trotted off to the sin bin for not rolling away from a tackle, Simon Keogh broke the Ulster line and dived over for the bonus try.
The fact that they got the bonus point right at the end of the match means that they go into next week's clash with Munster knowing that they can jump into first place if they win down in Thomond Park.