Logging in trouble.

[legendaryone]

I use two P.C.s but this problem only affects one.
Periodically one P.C. will delete my login details for all the sites i am a member. My cookies are left intact from other sites i have visited, i really don't know what to search for on the P.C. so if anyone has any idea what i need to untick could you let me know :)

[legendaryone]