Cookies!

Has anyone any idea why my website dosn't create a cookie when you use Internet
explorer?
but it dose create a cookie when using Opera!!! (all browsers with default
settings)

this page:
http://ajantis.compactvision.net/public_html/Koen/public_html/Gallery.php
the counter works with cookies,

here is some info opera gives me from the cookie:
Name: Vrouw01
Value: Vrouw01
Server: ajantis.compactvision.net
Expires: 2014-07-07
Secure: No
Only send to creator: Yes
Version: 0

why wont it work in internet explorer?