I think it would be interesting some way that would allow us to keep cookies from some important sites and be able to delete the rest. Because I find many Megabytes of cookies that I would prefer to delete in order to have more storage space but I would like to keep the session cookies of some sites such as Facebook or Twitter.
I think you could add an option for that in the site settings.
@leocg I guess I have the same problem. Suddenly Opera asks for a password despite running for years. Despite using the correct password, suitable for my Opera account, I'm told it's wrong for logging in.. Are there more than one" level" hidden behind a password?