well Karl did look pretty 'fucked' on Wednesday night and he does go at it all night long...
i could he was sniffing a lot, and sweating loads more than usual...
its prolly a credit that he did last nights show, but maybe thats taken it out of him
...
it was obviously an announcement left til late in the day to see if they could go on with it... but its prolly taken its toll....
its i assume no more than a combination of exhaustion and 'flu'
Karl's nit as young as some of the audience and most of them looked kanckered after two songs....
hope all is well soon