In fact I'm having the same issues with Ion auth this means that I really have an issue with my sesssions.
Codeigniter database sessions are working but either ion auth and community auth sessions aren't working.
This is VERY strange as I have session files in file mode and session rows in the database in database mode but it look like it can't get the information if logged in or not.
Maybe this has to do with my htaccess ?
SetEnv MAGIC_QUOTES 0
SetEnv PHP_VER 5
Options +FollowSymlinks -MultiViews
RewriteEngine On
DirectoryIndex index.php
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule (.*) index.php?/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond $1 !^(index\.php|images|robots\.txt|css)
RewriteRule (.*) index.php?/$1 [L]
<FilesMatch "\.(ttf|otf|eot|woff|woff2|svg])$">
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*"
</IfModule>
</FilesMatch>
If anyone has an idea I'm desesperate.