I worked briefly for a (quite small) company where the standard solution was Reboot. I had an interesting discussion with the other IT guy about a Linux firewall he wanted to do that to. I told him it wouldn't make a difference, but he was thoroughly Microsofted, so I did it to show him: it did indeed make no difference whatsoever to the problem. He wisely had nothing to say after I updated the other Linux firewall with up-to-date security patches in under 10 minutes. Without rebooting. Meanwhile the Windows 2K servers took 20-30 minutes to patch. Each. Plus 5 minutes to reboot (Dell 6000 series servers).

Wade.