Proxy pass tho strange problem

[skyfox]

Hi all

i have a strange problem when using squid R-Proxy or apache proxy passing tho pfsense, whatever in nat mode or bridge mode ,
seem like some rare disconnecting problem , i tried tunning those proxy timeout & retry times, still the same problem , but
when i tried on bridge mode disabled filtering bridge , everything will work fine , but i losted firewall features
may i know how to fix this problem

squid logs
2008/04/04 12:35:30| TCP connection to xxx.xxx.xxx.xx/80 failed
2008/04/04 12:35:31| TCP connection to xxx.xxx.xxx.xx/80 failed
2008/04/04 12:35:37| TCP connection to xxx.xxx.xxx.xx/80 failed
2008/04/04 12:35:38| TCP connection to xxx.xxx.xxx.xx/80 failed

my current pfsense setup
pfsense 1.2 RELEASE
bridge mode
Firewall Maximum States = good enough
HW: Dell 1850 3.2G  4G RAM
NIC:Intel(R) PRO/1000 Network Connection

thanks all  ;D