That eMail comes and goes but there's nothing we can do about it.  The reason it exists is to remind us about issue with regards to load-balancing.  I think we can replace the alert with a histogram of the apache processes like '[drone] Num of active processes' and have a cron job upload the stats at the same frequency as nagios currently does.  

In any case this bug is just to discuss whether it's a good idea to turn off the alerts with a more appropriate alerting mechanism.