[eluser]toopay[/eluser]
Give more clear information. And please, use more "technical" languange (posting your code will be the easy way to do that).
I believe no one know what you really..really..mean about 'but suddenly working very strange', ' When i logged in on login page, after login page redirect to home page', 'When I click on any other page even the home page again, the session destroy' and so on.