On Thu, 24 Sep 1998 16:45:09 -0400 Bill Verity said:
>Strange thing.    A busy edited list went without digests for several days
>and then we got a digest with the subject:
>
>        TRDEV-L Digest - 20 Sep 1998 to 23 Sep 1998
>
>What would cause this?  Other digests were produced for other lists over
>these days.

* list was held on 20 September and released on 23 September

* list was not posted to on the 20th through 22nd

Those are the two reasons I can think of off the top of my head.

Nathan