LocalBitcoins received a very dangerous attack against the site infrastructure on Saturday 3.5.2014.
For now

Details

LocalBitcoins hosting provided received a request to restart the LocalBitcoins.com website server and give access to the server console (root) on Sat May 3 13:32:27. LocalBitcoins team did not initiate this request. For now, it looks like the request was made using spoofed email addresses and other weakness in the hosting provider support system.
It is very unlikely that the attacker gained access to any data;  LocalBitcoins is still performing full investigation on the matter.
LocalBitcoins team will make further announcements when the investigation proceeds and the site becomes available again.  We expect to spend at least 24 hours on this. LocalBitcoins team apologizes the issues the downtime may cause to the users.