I'm running the latest Firefox v33.0.2 on Windows 8, but i've also tried the following on a laptop running Windows 8 and a Galaxy S5 running Android. Problems started this morning when i re-installed a laptop running Windows 8 and installed Firefox v33.0.2. I went to setup Sync and couldn't sign in. All known passwords didn't work. I requested to reset the password. I can't login to Sync, all known passwords dont work. If i click forgotten password for my main account i get 'Unexpected error' If i try and create a new Sync account and then Forgotten password as i can't login : I receive the forgotton password email, but almost immediately i get the error - Reset password link expired. The link you clicked to reset your password is expired. If i click the 'Click here to receive a new reset link' i get the error 'Unknown account' I can't sign up for a new Sync account - it says working, then an error occurred, although i do receive a verify email, but if i click on the link, created less than 2 minutes before it tells me 'Verification link expired The link you clicked to verify your email is expired.' If i try and sign in, despite receiving a verification email it tells me the account doesn't exist! So, i can't login to Sync, i can't reset my password and i can't sign up for a new Sync account - Every option simply doesn't work, so i'm assuming everyone must be experience Sync problems if they sign out and try to sign in or setup Sync on a new device? What's going on with Sync, the whole system seems to be broken? I've tried this on 3 different devices and get the same results! Please help!