The Raspberry build “server” producing the nightly builds at http://raspberrybuild.urbackup.org/nightly/ has been running for three years now.
Uptime shows:
14:36:23 up 649 days, 7:33, 1 user, load average: 0.00, 0.01, 0.05
I am surprised that it worked so long and so stable. Sadly it is now time to end it. It was running on the free Raspberry colocation by http://pcextreme.nl/.