Invalid email, even though last week it worked

Facebook Customer Support:
Phone Number: 1-650-543-4800
Average Wait: 12 minutes - 24 hours, 7 days

Suggest trying a new browser like Firefox or Google Chrome

I work on computers and have had many clients with yahoo email that has been hacked. Contact Yahoo customer service directly to restore access to your yahoo account (with a new password of course...)

Kindly check the email address you used in logging in to Facebook, is it a valid one.. also checked if you have hit the caps lock key in your keyboard, this can also cause wrong passwords.. :)
or if you want me to check your account, kindly pm me.. :) thanks!

i cant sign up 2 face book,its sayin verify email,took it to the shop an even they dont no wot to do plz help

I can’t receive the email to reset my password, because I no longer have access to the email address associated with my account. You can change your login email address at any time in the Settings ta... You can change your login email address at any time in the Settings tab of the Account page. Please note that you can log in with any email address you have added to your account. However, if you no longer have access to an email address associated with your Facebook account, you will need to contact your email service provider in order to regain access to that address.

If you forgot your password or would like it reset, click here to reset your password.

If you’re still unable to log in or change your login email address, click here.

If you are having trouble accessing an existing account on the site, please do not create another account, as this is a violation of our Terms of Use and may delay resolution of the issue.

Make sure you have a dot instead of a comma before the com

You haven't mentioned that you receive any message or not(When you try to login).
You may get message saying "Invalid link",
Password Incorrect,e-mail unregistered,account unavailabe or....
I suggest you to visit
http://www.facebook.com/help.php?page=800
Hope it will be good for you.

I had this problem 4 weeks ago, and I emailed [email protected] (or [email protected], can't remember) and they got back to me 2 weeks after with a really nice reply, and sorted it out for me. Put my account back to normal, and gave me a new password.
They were absolutely lovely, and when I emailed them back to say thanks they even sent me another email saying 'no problem'.
Just email them and be patient :)
Don't worry.

Hi,
To fix this problem, you need to reset your password and get anew password.

1. Go to http://www.facebook.com/reset.php
2. Enter your email
3. Click Reset Password
4. Log in to your email, click the confirmation code
5. Now you can enter new password

If you still having a problem, please let me know.