I'll say it again.
Every Host goes down. It's inevitable. No host can have 100% uptime. There are just to many variables and alot of the variables are outside of the hosts control.
Unfortunately Cologroup and Candid Hosting will lose customers today. I been in this busniess to long and have seen it to many times.
The problem is they have the service restored as any good host does and now they customers thats going to jump ship with the 2 of them will lose 2 days more of propagation time and only hurt themselves further.
If your a host and going to flame me now about your uptime better make sure your's isn't the next to go down. The flames you post today will haunt you when the inevitable happens to you.
