This one time, at band camp, Gaby vanhegan wrote:
>Hi,
>
>I just found a load of old dumps in my holding directory that, for 
>whatever reason, weren't written to tape.  I've now flushed all of 
>these to tape but they're still in the holding folder.  Is it safe to 
>rm -rf them all now?

I've seen one case where the directories aren't removed when they've been
successfully flushed, and that's if there are temporary files left behind
preventing a rmdir.