Hey, im having this problem too.
I backed up my old database, installed a new forum, ran install.php and then restored the database. All the posts and everything worked fine but some members have said they cannot login. I can login fine and some others can but some cannot.
One member who said they could not log in gave me their password and I found that I could login as them, although they cannot.
This is what happens when they try to login:
"Anytime I try with the password that I thought it was, it brings me back to the topics page saying "you are not logged in" but any time I type in a password that I'm pretty sure it isn't, it just tells me that I have the wrong password"
What could be causing this and how can I fix it?
Thanks,
Chris