I am going to outline here my current technical understanding of the state of the login problems. I do not pretend to have a complete understanding of their source. It is particularly difficult to deal with because none of the computers/browsers BBs have been able to get their hands on have this problem, so we can't really debug it in real time.
It is likely that the problem has something to do with cookies. Cookies are small pieces of information stored on your computer that we use to authenticate your connection with buzzerbeater, so we know that the information coming from your computer is you and not somebody else. In particular there is a cookie with the name .ASPXAUTH which needs to be saved by your browser in order to have your session authenticate and have you login. It seems there are some ways in which this cookie (and maybe one or two others) is not being saved by some browsers on some computers.
It is also possible that there are conflicts between different cookies and the different versions of the site, this is why we suggested people clear their cookies and try to start over from scratch. This has worked for some people but not all.
I have interacted with three people now who when they disabled anti-virus software on their machine they were able to login. This is because some anti virus software is overzealous about cookies and has some algorithm for detecting what is a "bad cookie" and what is an ok cookie, and for some unknown reason their algorithm doesn't like our cookie. The only reason to fear these cookies is because they allow us to track you the individual user as you move through the site. This is true, but we have to do this for a site like ours for which you need to be logged in. We don't want other users changing your teams tactics etc.
I have also spoken to, or heard about people for which the problem is browser dependent. Meaning when they switch to using firefox everything works great, but not so in IE or chrome or something. Maybe, and I can't really recall there are people for which it hasn't worked in firefox and has in IE or something. I'm not sure what to make of these problems. I know IE and firefox all have settings which control privacy and cookie storage, and so it is plausible that some configuration of these settings is blocking our cookies. If i understood better that this was the source of the problem, I could look into what algorithms IE/firefox/chrome use to detect what is an ok cookie and what isn't, and maybe figure out how to change the way we make cookies that would make it compatible with the default settings. There are definitely some settings that block all cookies entirely, and buzzerbeater is not compatible with those settings and we can't change it to make it compatible. You can find these settings in tool>internet options>privacy in IE for example.
There might be some firewalls or other software running on routers, particularly in large corporations which are actively filtering information that might block some cookies from working. I don't know of anything specifically, but people have reported problems at work on certain sites. We have lots of alternate URLs to use.. www.buzzerbeater.com, digitalfieldtheory.com, www2.buzzerbeater.org. so you can try those to get to the new site.
the old site is currently only at old.buzzerbeater.com. We need to take the old site down because we need to make some changes to the way we store our data etc, and we dont' want to make those changes in two places because it would be a massive job and a waste of our resources. So that is the reason for the push to make the new site work for everyone.
In the meantime while i continue to figure out what the root cause of all this is, we find that firefox seems to work the best. If people have information that would support or detract from any of these theories i would be interested to hear about them.