Subscriber cannot update profile when insert site url

I believe must be plugin;s issue..
As an admin i can successfully go to my profile and insert a url and update it!!
A subscriber though cannot.. i received a complain:
When i go to my wordpress profile i insert a url (so as to use it at comment luv) and when i press update i get this message in a new screen:
Are you sure you want to do this?
no option available!!!
what;s wrong?

http://ww.wp.xz.cn/extend/plugins/commentluv/