The Pound and Hash keys are transposed on my (UK) iMac since upgrading to Mac OS X Lion.
After upgrading my (UK) iMac to 10.7 I find that the £ and # keys are transposed i.e. shift-3 gives # and alt-3 gives £ which, I assume, is the standard US layout. I also upgraded my MacBook but this transposition didn't occur. What's going on here?!
iMac 2.8 GHz Intel Core i7, Mac OS X (10.7)