[squid-users] Problem running squid-2.5-STABLE10 with squidGuard

Hi,
I was successfully running squid-2.5STABLE-5 on FreeBSD-4.8....
Recently I've upgraded FreeBSD to FreeBSD-4.11 and squid to
squid-2.5STABLE-10.
I've kept squid configuration same after upgradation.
Now I'm unable to tune squid performance and facing the following error:

   (squid): Too many queued redirector requests (56 on 5)

After this error squid will be killed within a span of 10 minutes...

In squid configuration file I'm using:-
redirect_children 5
redirector_bypass off

Can anybody suggest how to cure this problem?
Is it due to performance mismatch between squid-2.5STABLE-10 and
squidGuard?

Thanking in advance

Salim Pathan