Rapper Lil Wayne has lashed out at critics questioning his professionalism after he postponed a New York concert date for a second time.

The Lollipop hitmaker, real name Dwayne Carter Jr., was originally due to perform in Rochester on 26 October.

But the gig was pulled at the last minute because Lil Wayne was unhappy with the standard of the audio equipment.

The date was postponed until 6 December, when the star was billed to co-headline with T.I. - but now that show has been cancelled because it clashes with Wayne's rehearsal time in preparation for his upcoming U.S.-wide tour. The Live Your Life hitmaker had also double-booked himself - he's due to appear on sketch show Saturday Night Live that night too.

Lil Wayne has subsequently been savaged for the continuous delays - but now his publicist Myiah Hughes has hit back at reports of his tardiness, blaming the concert promoter for the initial cancellation.

The representative tells AllHipHop.com, "Lil Wayne has not cancelled the Rochester, New York Blue Cross Arena performance.

"Failure to provide adequate equipment per a signed agreement, caused the October 26 concert date to be postponed."