Munster stay top
Munster grabbed a rare win in Wales to keep them top of the Magners League and put a dent in Cardiff Blues' ambitions of a top-four play-off place at the end of this season with a tense 16-15 victory.
Fly-half Ronan O'Gara, who had a mixed night with the boot, landed the vital penalty midway through the second half to secure Munster's first win on Welsh soil in six visits and only Cardiff's second home defeat in the league all season.
Munster, though, were well worth their win over a Blues side who never really got going but did rally when Scotland fly-half Dan Parks put them ahead with a trademark drop goal before O'Gara, who had missed four earlier penalties, had his say.
Back rower James Coughlan had given Munster a 7-3 lead midway through the half after a superb counter-attack by Ireland full-back Keith Earls.
Cardiff had the boot of wing Leigh Halfpenny to thank for still being in the game at the break, with the Wales star landing four penalties to keep them only a point behind.
Ruan Pienaar was the hero for Ulster at Firhill, his man-of-the-match haul of all 22 points ensuring his side snatched a last-gasp 22-19 victory against a typically dogged Glasgow side to climb to second.
A self-converted try and five penalties, the last of which came in the final seconds, were enough to see off the Warriors, whose sole try came from Ryan Grant.
Scotland fly-half Ruaridh Jackson booted 11 points, while his replacement Duncan Weir set up a tight finish with a late penalty.