One of the team just sent me this:
6:34pm up 1964 day(s), 8:24, 2 users, load average: 0.01, 0.02, 0.03
The server has been up for 5 years and 139 days! It has just been retired. I remember commissioning this server in 2002. It was running Solaris 8, processing many TCP/IP connections a day.