On 10/07/12 20:50, Jeffry Johnston wrote: > On Tue, Jul 10, 2012 at 1:47 PM, ant<aw30@...> wrote: >> I get the following error when running synaptic: >> --------------------- >> W: GPG error: http://www.debian-multimedia.org wheezy Release: The following >> signatures couldn't be verified because the public key is not available: >> NO_PUBKEY 07DC563D1F41B907 >> W: GPG error: http://ppa.quickbuild.pearsoncomputing.net squeeze Release: The >> following signatures were invalid: BADSIG 43F1DC4F2B8638D0 QuickBuild Trinity >> Desktop Environment >> ---------------------- >> >> what's the best way of fixing it? > > For the second one, install trinity-keyring For Squeeze at least Watch out installing the trinity-keyring package, it writes a file to /etc/apt/sources.list.d you could then have duplicates. Best to do the keyring manually. That is surely a bug, can't remember if it is listed (or is fixed now) Yes,if there are apt errors, apt-get update a bit later usually works fine David