Trying to catch up on my packages, I recompiled the new version of pine since its latest security fix (not in pine itself, but the PGP scripts that come with it). The compilation failed with the old versions of the imap-uw and pico libraries, so I bumped the minimum required versions of both to the current versions in pkgsrc.
If you have installed a binary pine package recently, you may want to recompile to avoid any strange behaviour (or core dumps).