We recently upgraded our servers with SP1 and the Feb. cumulative update. Everything seemed to go well, but we are now noticing that our Remember Me functionality is not working properly. We are not using session cookies and our FormsTokenLifetime value is still set properly in the Security Token Service.
We are writing two cookies when users login (using FBA with a custom membership provider and claims) for cross domain authentication and both cookies have valid expiration dates when they are written. However, after a variable amount of time, the cookies disappear as if the user had clicked log out.
Sometimes this happens after 15 minutes, sometimes after a couple of hours. Closing the browser doesn't trigger this to happen and I've seen a user appear logged out when they come back to a tab that had the site open and were logged in when they left it.
I was wondering if anyone knew if anything in SP1 or the Feb. update could be the cause of our issue.