+ - OS: existing waitpid call is not nice (not integratable with scheduler! fix this!)
+ => should 'scheduler' support SIGCHILD explicitly? Always?
+* STATISTICS:
+ - synchronous/asynchronous API (& implementation) is not nice;
+ => provide notification-based API
+ - does not seem to work with timeouts (especially if service is not running)
+* ARM:
+ - need to get rid of synchronous API for service starts (cause all kinds of problems)
+ [=> eliminate for need to tell ARM about service starts most of the time!] [Safey]
+* HELLO:
+ - need function to test "equivalency" of HELLOs; use in topology!