Hey guys, i was having that issue where i had to login everytime i switched pages. It wasnt just crackberry either, multiple sites i frequent. i found the problem though
I was looking at pr0n one day so i turned on the Private Browsing option in the browser settings so noone would inadvertently be subjected to my midget goatse pr0n if they grabbed my pb.
i forgot to turn private browsing back off though, that was the issue
I was having problems logging in also, but Private Browsing was off on mine. What worked for me was to clear cookies and cache. After that, I had no problem logging in.