System hangs with Squid intercept proxy

[Blaster]

I'm using Solaris 11 with the included IPFilter and Squid packages.

After I set up IPNat to do Squid intercept proxy, my system started soft
hanging...After a few days of home type use, the system would become
unresponsive...I could ping it, and get keyboard echo on the console,
but that was about it.

My ipf.conf looks like this:
name="ipf" parent="pseudo" instance=0 fr_statemax=18963 fr_statesize=27091;

I am logging some streams and IPF stats. At the time of the crash, this
is what was in the log:


fragment state(in): kept 0 lost 0 not fragmented 0
fragment state(out): kept 0 lost 0 not fragmented 0
packet state(in): kept 401772 lost 0
packet state(out): kept 95014 lost 32
-----------------------------------
streams allocation:
cumulative allocation
current maximum total failures
streams 1366 1610 5481543 0
queues 2261 2682 6543652 0
mblk 10652 16740 11167294 2
dblk 10637 18078 94780086 16
linkblk 13 83 14 0
syncq 18 50 47 0
qband 2 62 2 0

4532 Kbytes allocated for streams data


Do the lost packet states and dblk and mblk failures have any relation
to my hangs? This system is in a home environment, a busy one, but
still, I can't see Solaris having a problem with the small amount of
load in a home environment.

Anything I need to tune here?

Thanks...