Hello,

Whenever I run "apt-get update", I get this error message (lines broken):

W: GPG error: http://security.debian.org testing/updates Release:
The following signatures couldn't be verified because the public
key is not available: NO_PUBKEY 010908312D230C5F

The same message appears to other sites in my sources.list.

I vaguely remember that a long while ago, I changed my main
repository from mirror.direct.ca to debian.yorku.ca, and I
started to get these messages around that time.

Is there anything I can do to correct the signatures?

Thanks, Vilmos