I thought I had this one licked about a week ago, however it has come
back with a vengence.
The server is NW6.5 SP6 with patches.
Named.nlm is Version 6.05.02 August 11, 2006
I thought that I had fixed it by deleting the DNS server object with the
management console and re-creating. It worked without problem for a
week or so. Now named will stay loaded for about 10 or 15 minutes and
then exits with the assertion failure, an excert from named.run is as
follows

Nov 05 11:07:01.000 general: main: critical: mem.c:672:
INSIST(ctx->stats[size].gets > 0) failed
Nov 05 11:07:01.000 general: main: critical: exiting (due to assertion
failure)

I tried the delete and recreate solution again a few times this morning,
however this time no change.
I am somewhat at a loss as to where to go with this one from here, any
help is greatly appreciated.

Gus