I went ahead and created a fresh install of wp2.5.1 with a brand new db. I created some pages and posts and added a bit of cookie code.
When navigating to a page with the id of 2 I do this in the header.php
setcookie("myName", 'shua', time()+36000);
pretty straight forward stuff.
I then see if the cookie was set using the 'Cookies' menu item in FF WebDeveloper extension. Low and behold... it is there.
I them navigate away from that page, to a page with id 3. I once again look at my cookies... gone.
What is going on???
Cookies are turned on, they are set to expire in 10 hours - and cookies from other sites persist?!?