I'm a CentOS desktop user at work and Ubuntu at home. I love my Linux. Objectively, the parent poster is correct. For all MS's faults, I've had no less problems updating Ubuntu systems than I've had or seen with MS systems.

That said, CentOS is _rock solid_. The packages are old, but maintained by Redhat upstream and do not break on updates. The only thing I recall seeing break on a CentOS update, including point releases, are Firefox and Thunderbird extensions as Mozilla apps are updated eight version numbers from one ESL release to the next.

What type of update? Dist upgrades can be broken, but I've never had issues with general updates.

Mostly problems with the graphical stuff. More than once I've had to log in via a text console and mv ~/.kde somewhere else to start X, or move some ~/.Xfoobar file. Once some ~/.Xfoobar file filled up the entire /home/ partition due to some X error. I've also had problems with some network card driver on a new install, I can go through my posts on unix.SE if you want more detail.

I simply remember that Ubuntu should only be updated when I've got a spare day to fix any potential issues, whereas so far CentOS can be updated before each shutdown.

All this is from the perspective of a desktop user. I use both on various web servers and I've found both to be reliable. I'll use CentOS where I need absolute stability but on my cloud instances I'll happily use Ubuntu and get the latest PHP, etc.