up2date: rpm.error: public key not trusted?

[Patrick]

I"ve got up2date-4.1.12-1. Just now with an up2date -u (after
downloading tons of rpms) I get:

Traceback (most recent call last):
  File "/usr/sbin/up2date", line 1187, in ?
    sys.exit(main() or 0)
  File "/usr/sbin/up2date", line 765, in main
    fullUpdate, dryRun=options.dry_run))
  File "/usr/sbin/up2date", line 1050, in batchRun
    batch.run()
  File "up2dateBatch.py", line 82, in run
  File "up2dateBatch.py", line 153, in __installPackages
  File "up2date.py", line 604, in installPackages
  File "up2date.py", line 173, in getRealHeader
rpm.error: public key not trusted

Any ideas?

TIA,
Patrick