Let me describe the issue with more details. Using this website as an example, I log on with "remember me" checked. In the past, I believe I stay logged in no matter how many time I close and re-open IE. Lately, when I visit this site, the site no longer "remember me". After a sucessful log in, the site may remembers me for serveral hours or a day. When I visit the site late, I have to re-enter my user id and password again.
This issue is not just with this website.There are several other sites that I visit regularly and I encounter the same problem.
I don't believe this is an issue with RoboForm but somehow relates to cookies handling of IE.