Remember me cookie deletion with logout

Hi,
I have a site authentication done with the element
"rife/authenticated/mixed.xml". Authremember table is created by some
other element before authentication phase. To the element, I am
passing

<incookie name="rememberid" />
<outcookie name="rememberid" />

Everything is fine at first, the site remembers me. But when I log
out, I dont want to be remembered anymore but the site still remembers
me. I am logging out using the element
"rife/logout/template/memory.xml", it does not deal with the cookies.
What can I do ???

Thank you