Comment 1 for bug 1422345

I was able to confirm this by downgrading the version of apache2 installed to the one from the -release pocket and then running unattended upgrades:

 5867 root 39 19 284732 15232 9748 S 0.0 0.4 0:00.04 apache2
 5871 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2
 5872 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2
 5873 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2
 5874 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2
 5875 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2