-UPDATE: - While flusing the various chaches fixes several web based issues, the problems keep comming back, I have had to turn off all server side caching .
I have seen many people have login problems after upgrading to Ver 12
One solution may help many of you:
Apparently caching schemes on the server side do some weird things… There are various methods used to cache content on the server side. We have used two, Latest we used is Google Page Speed.
Using Google Page Speed is causing problems on two of our sites running on SiteGround servers.
After clearing the cache we were able to login. From CPANEL you can clear the cache. I hope this solves your problem.
