Hey there!
That "neat trick" is a real nasty one and it screwed things up for me too!
Would an administrator please remove that post?
I'm not exactly sure what other problems will be caused by changing the permissions of everything in your spool dir, but it definately caused me some printer problems.
My temporary fix was to look on another Redhat box and see what the permissions were.
In the var spool dir the permissions were (note: i'm not an authority on this one!)
drwx------ on 'at' and 'cron'
drwxrwxrwt on 'samba' (fixing this one fixed the printing problem)
drwxrwxr-x on 'lpd' 'mail'
drwxr-xr-x on 'mqueue' 'rwho' 'uucp' 'uucppublic'
Those are from a redat box, and fixing the samba dir seemed to fix things up.
In the lpd folder, my epson printer's default permissions (as set by esmith) are
drwx------
I hope that helps! I'm not a linux buff, so I'm not sure what the esmith permissions should be for /var/spool, but,
*if anyone out there who hasn't changed them would post their default dir permissions (/var/spool/*), that would be greatly appreciated!!*
Thanks!
Matt