I argued up and DOWN with people about us switching to google apps for our email.
Up until recently, we were hosting our own mail on a server in our switch room.
"It's more reliable!" I would insist.
Well...it hasn't been more reliable. There has been more than one longish-term downtime that I can remember since we switched over.
When I was hosting it myself, I could give people status updates, an estimate for when it would be fixed, some kind of explanation.
Now, all I can give them is "it's broken. I don't know why, and google isn't telling anybody why."
Very frustrating, especially considering how much we pay every month for it.