secondary zone "" expired

[toextfs at my-deja.com]

I am running BIND version 8.2 on Solaris 5.5.1.
This server is a secondary server to many other zones.
These "other" zone masters are running BIND 8.2.2p5.

When I look at my /var/adm/messages file on the 8.2 I see the following
entries appearing every 10 minutes or so:

---[SNIP]---

Apr 27 14:00:36 myhostname named[pid]: secondary zone "" expired
Apr 27 14:10:45 myhostname named[pid]: secondary zone "" expired
Apr 27 14:20:51 myhostname named[pid]: secondary zone "" expired
Apr 27 14:30:08 myhostname named[pid]: secondary zone "" expired

---[END]---

What does this messages mean?  Is it refering to cache expiration?
If so why would my cache be expiring every 10 minutes?

This doesn't appear to effect my ability to resolve named but
it is filling my "messages" file.


Sent via Deja.com http://www.deja.com/
Before you buy.