pgpool log errors

I've started using pgpool and while everything appears to be working,
I've been getting a lot of the following errors in my logs:

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ERROR: pid 14761: pool_read: EOF encountered
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This seems to be simple enough - the client/user probably just canceled
the request and isn't anything to be concerned about? I get about a
dozen of these per hour on a system that has about 25,000 connections/day.


----
ERROR: pid 14761: ProcessFrontendResponse: failed to read kind
----

I have no idea what this one means. I'm concerned because I get a lot of
these Between one and two dozen per hour.

I've googled. I've searched the postgres mailing list archives. Asked
around in IRC. Can't really find anything to explain it. I would greatly
appreciate clarification from anyone with insight to this.

Regards,