Dydfunctional behavior of the control HoverMeuExtender

Hi

With the ajax control HoverMenuExtender
i have a problem.

After have launch the page in Internet Explorer
with the onmouseover event on the linkbutton (as opportunely setted)
appears the popup.

The dydfunctional behavior is that
justlaunch the page,
little moments after than it opens the tab,
all the popups relative at the controls HoverMeuExtender
they open for some moments and then they close.
The effect isunpleasant.

Happen at you too?

Here are some sample codes about ajax:HoverMenuExtender for your reference.
<div>
<ul>
<li>
<asp:LinkButton runat="server" id="lnkParent" text="Parent Menu Item"/>
</li>
<asp:panel runat="server" id="pnlChild">
<ul>
<li>Child Item 1</li>
<li>Child Item 2</li>
</ul>
</asp:panel>
<ajax:HoverMenuExtender ID="hoverMenu"
PopupControlID="pnlChild"
TargetControlID="lnkParent"
PopupPosition="Bottom"
runat="server" />
</ul>
</div>
Wish the above can help you.