Email you should receive when your password is changed...did you do it ?

Content of the email should be ....


..................................................................................
Your Facebook password has been reset using the email address

(should say here what email address you use for Facebook)


on
(should say here the date and time  this was done)  


Operating system:
(should say here the OP)



Browser:  
(should say here the browser used)



IP address:
 ( should say here your location according ..The IP )  


Estimated location:
 (should say here where the system thinks  roughly the area you live and the country)

If you did this, you can safely disregard this email.  
If you didn't do this, please secure your account. ( the link they will give you in their email to you will link you to a web page that will tell you a bit more and ask you if this was you who asked for a password change or someone else  

Thanks,
The Facebook Security Team

......................................................................................
If you do get an email from Facebook  about this and you did not request a password change you will need to contact them to ensure your Facebook account is safe....