[13:51] <mterry> Does anyone know what the best thing to do if I keep getting invalid signature errors on archive.ubuntu.com?  I have ubuntu-keyrings installed...  is there some other possible misconfiguration?
[13:55] <tsdgeos> mterry: i had that problem
[13:55] <tsdgeos> mterry: i killed all the keys and loaded them again
[13:55] <tsdgeos> seems as if somehow it had corrupted itself
[13:55] <tsdgeos> which is real bad but i was in no mood or knowledge to investigate
[13:57] <mterry> tsdgeos: killed all the keys?  just reinstalled ubuntu-keyring or did it manually with apt-key?
[13:58] <tsdgeos> mterry: i used gui-apt-key to deleted all the keys
[13:58] <tsdgeos> and the used apt-key something something receivekey something something
[13:58] <mterry> tsdgeos: yikes.  I also am not in a mood to investigate, but that sounds dire  :)
[13:58] <tsdgeos> command is not on the shell history anymore
[14:00] <mterry> tsdgeos: well thanks, that's a good hint.  Will try
[14:09] <mterry> tsdgeos: yeah just deleted all the launchpad ppa keys and that was enough to clear the error...  wonder why
[14:13] <tsdgeos> maybe we had the bad luck of having some hash collision ?
[14:13] <tsdgeos> no idea how that works :D
[14:53] <tsdgeos> Mirv: what would you say about backporting https://codereview.qt-project.org/#/c/140322/ that applies fine (except some conflicts on the copyright headers) aka https://woboq.com/blog/qreadwritelock-gets-faster-in-qt57.html that makes QReadWriteLock faster (and thus QVariant creation faster too)
[14:53] <tsdgeos> ?