Hello, I'm pretty proficient with Unix/Linux systems, but I ran the "uptime" command on my Mac, and got the response seen below. I understand the 2 users stuff and the load averages over the past 1, 5, and 15 minutes, but what do the first numbers mean? 15:38 and 8:38? I know that my iBook has been on for at least 4 days... What's this mean?
