I’m a little confused now. Searched forums and wiki to get more information about session handling.

But nowhere is said what versions of CI supports what. I’m thinking that “Native session” library would be best for me, but.. maybe CI 1.7.1 already has all that features? I know that it has flash variables, but “Native session” states that it has flash variables. So what is the difference? And which to choose?

Third party session libs: http://codeigniter.com/wiki/Category:Libraries::Session/

The Session class is perfectly adept at handling your site’s session needs. It, however, might be troublesome when using third-party plugins that rely on using native PHP sessions ($_SESSION). If you give it enough thought, though, it’s usually simple enough to resolve the discrepancies.