weird system log error: EV_DELETE failed for file watcher

I just did a clean install of Snow Leopard (erased my hard disk before the installation using Disk Utility). I've run all the updates. I was experiencing some weird delay between the appearance of the blue screen and the appearance of the login window. The delay went away, but when I shutdown or restart, my system log has errors like this:

an 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 25
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 21
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 20
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 19
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 18
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 16
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 24
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 17
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 23
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 35
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 31
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 30
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 29
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 28
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 26
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 34
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 27
Jan 4 17:53:54 Musa com.apple.notifyd[11]: EV_DELETE failed for file watcher 33

Does anyone know what these mean? These do turn up on a Google search, but under systems prior to Snow Leopard! Remember that this is a completely clean system with no third-party software installed yet.