nate wrote: 
Rob Kampen wrote:

  
How do I get some extra log info to track this down?
    

Have you tried to run 'show full processlist' on mysql while
the query is running? It should show all active queries, what
they are doing and how long they have been running for.

Also enable slow query logging and logging when not using
indexes, add to /etc/my.cnf and restart mysql:

example:
log-slow-queries        = /var/lib/mysql_logs/slowqueries.log
log-queries-not-using-indexes
long_query_time = 3

nate

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Have entered those into the my.cnf file, restarted mysqld and monitored the file - no entries forthcoming with the faulty page request.
looking at show full processlist, I see the start of a new process, then almost immediately it goes to sleep and then just sits there....
Thanks for these items Nate - look useful for the future.
I think I need to look in the php direction....
Rob