I have my Adsense login tied to my Google/Gmail account. Doing so causes G to remember who you are next time you come back to the Adsense login page and skip by the login process. I find this a very handy feature. But it seems to un-remember me on a semi-regular basis.
Does anyone know, is there a rhyme or reason to when G un-remembers a login?
I've recently had trouble with this too. I was using the Gmail notifier with the version 5 toolbar and apparently they are incompatible. I uninstalled the Gmail notifier and installed Google Talk instead. All is now well.
This may be set to occur every 7 days. I've never made a note of how frequently it happens to me, but you can log out today, log in again immediately and then make a note of when you are next prompted to log in again.
[edited by: MyNewPC at 1:31 am (utc) on April 30, 2008]