I was just wondering if anybody has managed to install their iPhone developer certificate on more than one machine (i.e. a desktop and a notebook). Code signing only works for me on the computer that I used to generate the key request. I've downloaded and added the certificate to my login keychain on my other Mac, but code signing just won't use it. Have you had more joy? I'm still quite new to Mac, so it's possible that I've missed something obvious in Keychain that I need to do, but I can't see what. I presume that I'm missing a private key on the second Mac. Thanks for any help! Adrian P.S. Just out of curiosity, how is everyone getting on with the iPhone developer kit? I'm really loving playing around with it - especially the accelerometers - but I've not managed to write anything useful yet.