I think most of us can forgive pretty much any mistake but for a service company, there are two golden rules:

1) Know that you have a problem quickly. We reported an issue yesterday and it took them 3 hours to acknowledge that there was a problem, causing us to waste hours trying to make sure nothing on our system was causing it

2) Always have a quick way to roll back changes or mitigate a problem. I think they were having some power supply issue but it is still a business risk that should have been solvable quickly.

There are certainly not the only ones but when you keep blogging about your company's technical prowess, this makes you look stupid.