We just uploaded new DEB packages for Ubuntu 16 and 14 that fixes a regression in the previous release. In packet mode under certain traffic conditions Trisul can crash due to an OOM (Out of Memory) condition.
The packages affected : trisul-probe
If you are seeing stabliity issues, it is likely this update will solve it for you.
To update follow the procedure in https://www.trisul.org/docs/ug/install/doupgrade.html