I've got a couple Gentoo machines that normally run 24/7. I've learned over the years that it's a good idea to reboot them occasionally (when I have some spare time and I know they're idle) just to make they still can.
I've settled on roughly once a month or so. What seems to happen if I don't do this is that some update (or perhaps just a stupid configuration mistake on my part) will render the machine non-bootable, and I won't discover it until several months later at the worst possible moment when I'm in the middle of something urgent and the power fails, or I type "reboot" into the wrong xterm, or whatever. Or maybe those things don't happen to other people... -- Grant Edwards grant.b.edwards Yow! GOOD-NIGHT, everybody at ... Now I have to go gmail.com administer FIRST-AID to my pet LEISURE SUIT!!