There's quite a bit of chat going on about this at the moment. The London 2012 Olympic logo (on the left) has had it's fair share of critcism (as is an advert). The BBC are showing contributed logos, my favourite on the right.
I don't suppose any logo would be universally popular. I'd sort have expected it to have "just crept in" without quite so much media coverage. Apparently it's flexible and will evolve. Keep 'em peeled ;-)