What's it mean when a process (Washington University's imapd, in my
case) has a file open, according to fstat, but the file doesn't actually
seem to exist anywhere? The file is somewhere in my root filesystem, but
a "find -x / -inum [inode number from fstat]" doesn't return anything. 
du -x / doesn't show the file either, but df shows the amount of free
space going down, and the kernel complains when imapd fills up my root
filesystem. 

I ask because whenever I get a large email attachment, pine will fill up
/ trying to write its checkpoint file. I'm curious where this checkpoint
file is, and I'd like to get pine to stick it someplace else :) (I only
have about 2 megs free on /)

My system is running NetBSD/i386 1.3.