The vasd(Temporary IPC) (PID ) exiting is normal behaviour to see in the logs and can be safely ignored.
The older 3.x and 4.0 worked very differently than the 4.1.x or 4.2 version of the product. In the past, version 3.5 days, semaphores were used in the NSS module to handle threaded requests, but that is no longer the case. IPC is a legacy name for them, they don’t actually use anything from ipcs. Authentication Services internally uses a UNIX domain socket for communication. QAS has also changed the amount of processes in the version 4.1.x and up. There are a minimum of 6 and a maximum of 9 vasd processes. The processes are the Parent, a Dispatcher, a DB Handler, an auth handler, two permanent LDAP Handlers and up to three temporary LDAP Handlers as needed which will start and stop.