Who says Windows can't be reliable? This is a Windows XP laptop that is only being rebooted because I need to reformat it to use for a different task:

C:>uptime i3500
i3500 has been up for: 319 day(s), 19 hour(s), 40 minute(s), 30 second(s)

[Adrian Bateman (VisionTech)]

You haven't installed a Microsoft security patch in the last 319 days it seems...