I went through your articles, and some troubleshooting. Disabling .htaccess etc.
Disabling Admin Tools brings the backend admin back to life.
It would seem the attempted logins are logging in, but never presented anything. Ex - If I attempt a login, get the timeout, disable Admin Tools, try logging in again - I'm already in an authenticated session.
This site is being served from a shared server - up until very recently the only site/domain on our account.
Recently we added an additional domain, in a folder outside of the current site structure. We haven't gone live with the new domain, so I was able to remove it from cpanel. When I do - I can log into the back end with admintools enabled.
Was hoping you could point me in the right direction as to what I may need to adjust or look for, either in cpanel / admin tools/ etc.
Thank you as always for your time.
Chris