RoundCornersExtender both right corners are outside the bounds of the div

On IE, my panel appears with the corner border missing chunks. Actually, the border runs outside the width of the div because
ASP.NET renders the corner DIVs with a margin-right of 6px through -2px (for a radius of 8). This causes the last two pixels
to not show up.

This renders perfectly under FireFox.

Created a panel with a rounded corner extender on it like this:

 <asp:Panel ID="pnlAddMeToYourBlackBook" runat="server" Width="147px" BackColor="#ebf5ff" Style="margin-top: 2px"> <div style="padding-left: 10px"> <table cellspacing="0" cellpadding="0" width="124px" border="0"> <tr valign="top" align="left"> <td width="26px"> <asp:ImageButton ID="btnImgBlackBook" runat="server" ImageUrl="~/images/SearchResults/graphics/prof_icon_blackbook2.gif" BorderStyle="None" Width="18px" Height="18px" ToolTip="Add this user to your Black Book" ImageAlign="absmiddle"></asp:ImageButton></td> <td> <asp:LinkButton ID="btnBlackBook" runat="server" CssClass="lc_prof_comm_link">Add me to your<br>Black Book</asp:LinkButton></td> </tr> </table> </div> </asp:Panel>

<
cc1:RoundedCornersExtenderID="rcAddMeToYourBlackBook"runat="server"BorderColor="#7eb1e6"Corners="Bottom"Radius="8"TargetControlID="pnlAddMeToYourBlackBook">
</
cc1:RoundedCornersExtender>

Does anyone have a suggestion for why this is rendered this way?

Thanks
Larry

Anyone have a clue on this?

SomthingI failed to mention was that the corners worked perfectly on IE when I was building in a separate project. Then when I incorporated the page into the main website (very large, lots of legacy stuff, css, prototype libs, ajaxpro libs, etc.), the corners started messing up. Does anyone know what could be conflicting with ASP.NET AJAX in a chaotic environment like this?

Thanks,
Larry