Quoting drochner%netbsd.org@localhost:
Synopsis: gnome-screensaver doesn't accept correct password State-Changed-From-To: open->feedback State-Changed-By: drochner%netbsd.org@localhost State-Changed-When: Thu, 02 Nov 2006 11:25:16 +0000 State-Changed-Why: did you install the pam file as described in the pkg MESSAGE?
This package was installed via meta-packages/gnome, which didn't produce any readable configuration messages to my knnowledge (although I didn't actually watch the console during the build, since it didn't stop and require any input from user, I'm assuming it didn't.)