Host problem in Category "Links : Children"

Hi everybody,

We are currently testing request tracker. But we have a little problem, can
someone help me ?
In ticket display page, category link, when we have assign a children to the
ticket, the link’s format isn’t correct.

It is : http://localhost/Ticket/Display.html?id=287 and we should have like
in create parent’s (
of url :

Can someone know where is the problem ?
Thanks in advance.