Suhosin?

[eluser]a&w[/eluser]
Anyone know of pros/cons against using it?
http://www.hardened-php.net/home.8.html

I see a few issues from a couple threads:
http://ellislab.com/forums/viewthread/48115/#232360
http://ellislab.com/forums/viewthread/47844/#230622

One thread mentions not using CI's session class.

Thoughts?