My facebook was hacked!
Somebody accessed my account and changed its email and password! wtf!
I found out that the email used was firstname.lastname@example.org - fck you!
I'm so glad I was able to recover my account through Fbteam's Hacker security [something]! Thank goodness! Else i'll start from scratch again. No way!
So guys, be careful from allowing your fb account to be open from applications. I guess it's their way of getting your details to steal your account then do bad using it.