I've noticed across a number of difference accounts now that I can't seem to log out of EFUSL by clicking on the "You are logged in as Account_Name_Here. Click [here] to log out." text.
It seems the only way to log out of EFUSL is to delete the cookies related to EFU and then to reload/refresh the site.
I can't pin point when this problem started cropping up, but it was definitely after the EFUSL passwords were reset (http://www.efupw.com/forums/showthread.php?t=84269).
Update:
It seems this problem only occurs if I log in while having "Remember password" checked. If I log into EFUSL without it checked, I can log out normally.
This is still happening.
I find it only happens for me if I click on the "remember password". So I don't anymore. I've had no problems since.