Facebook tonight apologised after the site went down again for the third time in three months.
In a statement it said: "Earlier today we encountered an error while making an infrastructure configuration change that briefly made it difficult for people to access Facebook.
"We immediately discovered the issue and fixed it, and everyone should now be able to connect.
"We apologise for the inconvenience and will thoroughly investigate this issue so we can learn from it and ensure that Facebook is there when people need it."
More top news
Cyber stalkers and scammers rely on careless posts and lax security. Here are the key ways to keep your personal information private.
After years of stalking, Kerry Daynes found her pet dead in a twisted position and the message "Jill Dando" scrawled on her home fence.
The issue has been an elephant in the room for many years, and it's always been considered distasteful to debate the matter.