Justin Bieber Returns, Rocks Out in London >>Hollywood

Breathing problem, scheamthing problem.

Justin Bieber took to the stage in London's O2 Arena last night, just 24 hours after passing out at the same venue.

Justin Bieber - "Never Say Never" (London)

But no issues were reported this time around, as the young superstar belted out such hits as "Never Say Never" (above) and danced around like his lungs were in tip top shape.

Nor did Bieber shows any signs of anger, which was refreshing after a morning spent flipping out at a reporter.

Indeed, it's been a rough time in England for the singer, from health concerns to temper t