I deactivated my FB so I could concentrate on finals and 3 weeks later I received the automated message from FB saying that someone activated my account. "A new device named "phone" logged into your Facebook account (Saturday, August 27, 2011 at 6:58am) from San Diego. (Note: This location is based on information from your ISP or wireless provider.)"

Few minutes later: "You recently changed your Facebook password." Which I didn't. I live in LA and don't even have a phone that has the capacity to log in to FB.

Has this happened to someone else and what does it mean? I followed the link and reported it and changed my password but I'm still worried.

you should also change the password to the email account that you made your facebook account with, and then change your facebook password again. its important to always make sure that you are careful with checking the log in pages URL to make sure that its a genuine facebook log in page and not a scammer page trying to 'fish' for your password. i hope that my advice helps. good luck

Thank you. I just changed my email address and my FB password again.

you are very welcome. i really hope that it helps to put your mind at ease at least a little. best wishes