My last #Slackware uptime (on my home server) was 260+ days.
That machine is on 24/7/365. The only time it reboots is when there is an electrical power issue or a kernel update.
I have had uptimes on more than a year on that machine. And it's off the shelf components, not "professional" server hardware.
I have also worked with #Slackware on "real" server hardware, and had the same kind of uptime. It's really great when you need something stable.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko