I have developed the site locally, tested and all is working correctly. After pushing the site to the live server I am now not able to login to the backend. From the looks of things (by outputting the session) sessions are not being stored correctly. On the local instance I see all the correct data in there for the form to work, but on the live site it is not and after posting the form hits the login page, then the admin page but is subsequently redirected back to the login page.
The hosting providers have said they use load balanced memcached servers for their sessions globally and APC cache for opcode caching (but they doubt APC is the prob).
Any help with what I can do would be fantastic. The SS instance is a 2.3 and it is a basic CMS site.
Thanks in advance.