Rash of password resets not working?
 

On some of my sites we've noticed a trend. We've had a few users that have said all of the sudden they were unable to log in. When they did the password reset procedure they get the password and try to login with it and that doesn't work either.

We've made no changes on these sites and it's something that just came up out of the blue, anyone else seen this? Any idea what's going on?