Hi,

I created an usercontrol in SharePoint 2010

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
    <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="grdPublishingRequests">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl ControlID="grdPublishingRequests" LoadingPanelID="RadAjaxLoadingPanel1" />
            </UpdatedControls>
        </telerik:AjaxSetting>
    </AjaxSettings>
</telerik:RadAjaxManager>
<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Skin="Vista" />

<telerik:RadGrid AutoGenerateColumns="False" ID="grdPublishingRequests" EnableViewState="true" 
                AllowFilteringByColumn="True" AllowPaging="True" PageSize="15"  
                AllowSorting="True" Width="100%" Skin="Vista" runat="server">
                <PagerStyle Mode="NextPrevAndNumeric" AlwaysVisible="true" />
                <GroupingSettings CaseSensitive="false" />
                <MasterTableView TableLayout="fixed" />
                <SelectedItemStyle CssClass="ms-selectednav" Font-Bold="true" />
                <AlternatingItemStyle CssClass="ms-alternating" />
</telerik:RadGrid>

and I use this usercontrol into a custom webpart
First time everything is ok if I changed the "Page size" after postback I can't access "Page Size"

This issue is only on SharePoint 2010, on SharePoint 2007 is ok.

Thanks for help
Ovidiu