PHP Session Question

[atomicnuke]

I'm setting a session and for some reason now they aren't working like they did before. I seem to have to use http://www.sitename.com/directory/script.php for them to be accessed, instead of going to sitename.com/directory/script.php. Does anyone know why?

[gorehzone]

Setting session parameters at domain.com does not affect session params at www.domain.com.
They're considered two separate websites from a sessions standpoint.
If you're using www, don't have links going to the site without the www.
-J