Expiriencing the problem described above myself (sent you guys an e-mail asking for help, but now I fix it) and knowing a bit about IT, have you not considered that your statament is in fact pointing the problem to yourselves and not to "OUR PCs"?
The cookie was made by the website, and you can be sure it is correct. But after it arrives on YOUR PC, it can be made invalid by anything in your system. I checked with an user that cannot login, and the name of the cookie on HIS PC for fsdreamteam.com is NOT what is being sent by our website, as if something in HIS system changed it's name.
Obviously, once he cleared the cookie, the problem went away, which is a clear proof that:
- The forum sends the correct cookie
- The changed happened locally.
You should consider checking with your site administrator (don't mistake it with Forum administrator) Surely something has been done with the cookie that is causing problems to so many users, and ONLY with this forum, specially when it didn't cause before.
And don't you think this was the first thing I tried, when the first users reported it ? Of course I did that, and of course the site host said nothing has changed, nothing is wrong with the forum.
Please just be a bit scientific and accept the posibility that is the cookie and not OUR PCs the root of the issue.
Yes, it is. We have 23000 users, and less than 20-30 have reported this issues. So yes, it is a problem of YOUR PC, most likely a changed security settings, in the browser.
Again: how do you explain that clearing the cookies fixes the problem ? If the forum really sent "wrong" cookies, after clearing them you would still get a new, wrong one.