PHP - sessions getting lost

[CPF_]

Hi, after the MySQL problem, which I could fix, I have recompiled php to make a better availability to the server.
At this moment, everything is working perfectly, except sessions.
For some weird reason sessions are not stored.
php.ini shows:

session.save_path = "/var/lib/php/session"

I checked that, made user:group and permissions correct, I even gracefully restarted the server.
Logs tell me near nothing (except about 90k of rewrite logs)

I see nothing about php getting some errors. Nowhere...

Anyone has got a hands up for this one?

Thanks in advance.

[CPF_]

--> It is fixed, apparently php doesn't run with the same user:group as apache.
Changing the permissions to 777 for a while showed that.