Facebook is suffering a system outage that is preventing people from posting status updates.
It’s unclear how widespread the issue is, how long it has gone on, and whether it is affecting just the website or apps, too, but rest assured it isn’t just happening to you. Several people were hit with this error message when trying to update their statuses:
“There was a problem updating your status. Please try again in a few minutes.”
System outages aren’t common but they aren’t unheard of either. Companies like Facebook and Twitter experience disruptions from time to time, often because some service or a server is knocked offline.
In Facebook’s case, the issue is because of the sheer number of users at any one time. In some cases, like when a company provides services for many others, the disruption can be large. That’s the case when Amazon Web Services suffers an outage.
-The Wall Street Journal