Live Earth Event Snowed Out?

The Johannesburg Live Earth event had poor attendance, blamed on unusually cold weather:

Organiser John Langford believes extremely cold weather in the region - it snowed last week (ends06Jul07) for the first time in a quarter of a century - kept people away from the concert . . .Langford said, "We're expecting 10,000 here tonight. It's a bit chilly, and we've had a strange winter... is it climate change?

Wait, I thought global warming was supposed to make things, you know, warmer.  Now they are blaming the first snow in Johannesburg in 25 years on global warming?

It's the perfect crisis, all weird weather--warmer or colder--is caused by . . . global warming.

So I guess we'd all better take the pledge, before we're buried in snow.