Implicit Classes intermitantly working

[Paul]

> I have an issue where occasionally the implicit classes go away.  My config is such:
> I have 5 nodes.  2 are "servers" and 3 are "clients", but they all share the same cupsd.conf and the client.conf file is empty.  We are building the printers on the 2 "servers" and then the clients all automagically see them.  Our problem is that occasionally, the implicit class goes away (i.e. if you take down "server" 2 and do an lpstat -a on a client it only shows printer at server1, all the classes go away.  even if you cycle cups on all the remaining servers.
>
> Ideas?  Thanks in advance.

Plot Thickens...
if I stop cups, remove /var/cache/cups/remote.cache then start cups back up, it works after the 30 sec refresh rate, but why do I have to manually wipe the cache for the implicit classes to work?