I do not need a solution (just sharing information)
I had the following issue/case in SSR2011. Not fixed in SSR2011. Symantec fixed in SSR2013
Case 600-781-163 Event triggers cause machine to hang. Eventually the machine would run out of resources and hang. Finally fixed in SSR2013.
Problem using SSR 2011 when I configure the Event Triggers, under the General tab, "Any application is installed or uninstalled" the "handle count" as seen in the task manager increments until the machine locks up.