Using haproxy-1.5-dev19 on Debian/Wheezy, and haproxy-1.5-dev21 on CentOS6.2, killing haproxy with SIGQUIT gets me nothing in the system logs.
SIGHUP gets proxy/server status info into the logs just fine. I'm using them the same way, but SIGQUIT seems to just do ... nothing? Nut loose on the keyboard? Thanks, ...jfree