zero sized reply

Hi!

I recently configure my squid22-stable4 with webdav patch as
transparent proxy for our clients.
After 3 days I noticed following problem: when client send POST
request it can get Zero sized reply error from squid.
This situation 100% reproducible when client connect to another
proxy (client proxy), client proxy then catched by my transparent
proxy.
I also noticed, some clients get this error when it connects directly
to my proxy (actually I even see this situation yesterday), but
I still cannot 100% reproduce this situation.

PS: Sites for testing - almost any site with POST forms.

--
Vitaly Belekhov
RISS-Telecom Networking Center, Novosibirsk
System administrator
work phones:	+7 3832 297-107
		+7 3832 103-845
pager:		51-06-06, 12570
fax:		+7 3832 297-537