Strange issue with CustomLog and multiple virtual hosts

Hi All,

This is a really strange one, and probably due to something that I've
overlooked. I'm also sure that I've seen the following working properly!

My aim is to have a mass virtual-hosted machine with 99.9% of domains
running with the same configuration, but for a specific, named virtual
host, I want to configure the logging so that it has a different log
format and is written to a different place.

The server is 1.3.28 on Solaris 8.

So, my (condensed) httpd.conf looks like this:

# Main (default) section
LogFormat "%h %l %u %t \"%r\" %s %b %V" vcommon
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"
%V" full_combined

# Interesting line
CustomLog /usr/local/apache/logs/access_log vcommon

<virtualhost _default_:80>
VirtualDocumentRoot /export/home/%0/www

CustomLog /usr/local/apache/logs/access_log vcommon
</virtualhost>

<virtualHost www.special-domain.com:80>
VirtualDocumentRoot /export/home/%0/www

# Troublesome line.
CustomLog /export/home/special-domain.com/logs/access_log full_combined
</VirtualHost>

What seems to happen is that when 'troublesome line' is uncommented,
*all* logging seems to go to the second logfile, not just hits for
special-domain.com. When the line is commented out, all logging goes to
the 'default' location. Also, if I comment out 'interesting line', then
I get no logging at all!

Changing the ordering of the <virtualhost> sections seems to make no
difference.

What am I missing? I'd be happy to post the full conf file if that would
help.

Many thanks in advance,

Paul.