We're having some problems in the Security section. First, when setting permissions for a new security group, they don't save. We also don't get an error message indicating a problem with it trying to save. Second, we've noticed on Firefox when we create a new security group it does save, but the list of groups doesn't refresh and show the new groups. It works in IE for Windows.
We don't seem to be having a problem creating content, atm, just in the Security section.
SS2.0.1rc5, Fedora Linux, PHP5.1.6, MySQL 4.1.21