mysterious processes.....


I'm very much a novice, and have just encountered my Process Viewer for the first time. I am rather intrigued by the fleeting appearance of esoterically named processes (single letters or symbols) with a mystery '???' user, which vanish from the listing too soon for perusal... can anyone shed light on this enigmatic phenomena?
It's typical UNIX stuff -- nothing to worry about.

If you open NetInfo Manager, then click on "users," you'll see that you are only one of about 15 users that UNIX has set up by default, each with their own set of tasks and permissions.

There are a few processes that also run without a designated user account, which could be the "???" user you're seeing.