Thank you for this clear example! Luckily, it behaves as you would hope, picking the valid subkey it can use and ignoring the one it can't. Cheers, Peter. -- I use the GNU Privacy Guard (GnuPG) in combination with Enigmail. You can send me encrypted mail if you want some privacy. My key is available at <http://digitalbrains.com/2012/openpgp-key-peter>