Log-in problems from Dashboard

I'm using the Wordpress Plugin, I have Enhanced Comment Moderation enabled and my profile is synchronized, but when I go to Comments in my Dashboard the IDC log-in fails. I'm not getting an error message, it just won't go through. I've checked that the username and passwords are the same for the log-in and IDC, I've tried disabling and re-enabling the Enhanced Moderation setting and resetting the plug-in. No effect.