File locking?

["Dave Lerner" <mercury@spamcop.net>]

This may or may not be a potential problem.
The scripts lock the data files individually:
open and lock file #1
access file #1
close file #1
open and lock file #2
access file #2
close file #2
If any of the files are interdependent, this could result in files getting
corrupted, if multiple users are running the scripts concurrently.