I found some errors in my cache.log file this afternoon, I have tracked it down 
to a development machine and know that  they occurred while the developer 
working on the machine was doing a build out of Plone, which did in the end 
succeed so I am not sure this is a huge concern but would rather not have the 
errors in the future if it can be fixed.

There were several entries like this in the access.log:
1264442419.041      0 10.20.147.34 NONE/400 1806 NONE 
error:unsupported-request-method - NONE/- text/html

That corresponded to entries like this in the cache.log:
2010/01/25 12:03:35| clientParseRequestMethod: Unsupported method attempted by 
10.20.147.34: This is not a bug. see squid.conf extension_methods
2010/01/25 12:03:35| clientParseRequestMethod: Unsupported method in request 
'_z___'

I checked on the extension_methods, but am a little confused as to what to 
enter for the method?  To possibly solve this issue, would I just use the 
following configuration line?
extension_methods _z___

If anyone could point me in the right direction to find some resources on this 
issue it would be greatly appreciated.  I tried searching but didn't find any 
information on _z___ on the web.  I am currently running squid3.0.STABLE21.

Thanks,
     Dean Weimer
     Network Administrator
     Orscheln Management Co

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