[Zope] Zope, Squid and manage_workspace

[Eddie Butcher]

I've been pulling my hair out over this one for some time now and 
followed-up all the appropriate search queries and FAQs etc.
With no luck. I now humbly ask help from the assembled crowd.

Platform: Zope 2.7.1b1 on Redhat 7.3/i386

"Zope/(unreleased version, python 2.3.3, linux2) ZServer/1.1 
Plone/2.0.3"

I'm setting up a new ZOPE based site, the world can see it fine and I 
can manage it as normal. So far so good.

If I try the same from inside my company network, all seems to go to 
plan, until I call /manage_workspace against any object, then I get
no response returned.

The bizarre thing is I can call /manage_main against anything, no 
problem. ONLY /manage_workspace fails.

The only difference between world access and internal access that I can 
figure out is our company squid proxy. This is not being used as a 
local HTTP accelerator for ZOPE but as a simple mandatory company-wide 
proxy for all web traffic.

>From grepping the squid.log it seems that squid forwards the request to 
the ZOPE server fine but never receives or 
acknowledges the ZOPE reply.

Just as a comparison, using an Apache front-end to ZOPE with ProxyPass 
works fine (dunno why), but I can't pursue this as a solution as it 
cannot be seen externally to the company, again dunno why :-(

Can anyone shed light on this please, any similar experiences?

-- 
Eddie