bugzillaId-718: maxscale stops and kill -9 is necessary

This is import of http://bugs.mariadb.com/show_bug.cgi?id=718

Yesterday we upgraded from 1.0.1beta to 1.0.4 stable version (installed using maxscale repository for ubuntu 14.04).

During the night we observed two crashes with no info logged into skygw_err1.log.

During the crashes maxscale just stopped respond to any requests and we were unable to restart and the only way to make it working again was to kill the process with -9 signal.

After the crashes we decide to downgrade to 1.0.1beta and it seems to be working fine for last few hours.