[Gllug] apache logging woes

[will]

I have googled, but I just can't see why my apache piped logs don't 
work, anyone have any ideas?

I have the following VirtualHost directive in Apache 
(http://httpd.apache.org/docs/logs.html#piped):

CustomLog "|/usr/local/sbin/ai_log_parser" combined

This is part of the (very basic) python script 'ai_log_parser':

--------------------------------------------------------
conn = dbConn()
cur = conn.cursor()
sys.stderr.write('before loop')

for input in sys.stdin:
         sys.stderr.write('in loop 1')
         cur.execute("insert into tmplog (line) values (%s)", (input))
         sys.stderr.write('in loop 2')
sys.stderr.write('after loop')
--------------------------------------------------------

This script works when called from the command line (ie. data gets into
the database):

bozotheclown:/etc/apache# echo "poop" | /usr/local/sbin/ai_log_parser
before loopin loop 1in loop 2after loopbozotheclown:/etc/apache#

But when a request is made for a page via apache I get nothing.  When
Apache starts I get this in apaches log:

--------------------------------------------------------
[Tue Feb 15 10:19:47 2005] [notice] SIGHUP received.  Attempting to restart
[Tue Feb 15 10:19:48 2005] [notice] Apache/1.3.26 (Unix) Debian
GNU/Linux PHP/4.1.2 configured -- resuming normal operations
[Tue Feb 15 10:19:48 2005] [notice] suEXEC mechanism enabled (wrapper:
/usr/lib/apache/suexec)
[Tue Feb 15 10:19:48 2005] [notice] Accept mutex: sysvsem (Default: sysvsem)
before loop
--------------------------------------------------------

So it is obviously running, but that 'before loop' is as far as it gets. 
  This is on Apache on Debian:

Server: Apache/1.3.26 (Unix) Debian GNU/Linux PHP/4.1.2

Any help would be appreciated.
Will.
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