IE only allows 20 cookies per sight.
It looks like one cookie when you look at it in explorer, but you could basically
unstring a cookie.txt file delimited by ";" into cookie1, cookie2...cookie20.
Handling the cookie is IEs job since you have to go through its routines to access local files.
That really sucks. All the other browsers don't care how many cookies you have.
I hate spending hours trying to figure out why items are dropping off when the reason is plain stupidity.
--- sheesh ---