My computer is very slow.

When I access http://localhost/mojoportal,the application begin to be compiled.But the process is very slow.

Then it can throw System.NullReferenceException.And I refresh the page ,no exception is threw.

Default.aspx.cs

private void LoadPage()
{
EnsurePageAndSite();
if (CurrentPage == null) return;
LoadSettings();
EnforceSecuritySettings();
SetupAdminLinks();

if ((CurrentPage.ShowChildPageMenu)
|| (CurrentPage.ShowBreadcrumbs)
|| (CurrentPage.ShowChildPageBreadcrumbs)
)
{
this.MPContent.Visible = true;
this.MPContent.Parent.Visible = true;
}

if (CurrentPage.Modules.Count > 0)
{
foreach (Module module in CurrentPage.Modules)
{
Control parent;
switch (module.PaneName.ToLower())
{
case "leftpane":
parent = this.MPLeftPane;
break;
case "rightpane":
parent = this.MPRightPane;
break;
case "contentpane":
default:
parent = this.MPContent;
break;
}

if (module.CacheTime == 0)
{
SiteModuleControl siteModule = (SiteModuleControl)Page.LoadControl(module.ControlSource);

siteModule.SiteID = siteSettings.SiteID;
siteModule.ModuleConfiguration = module;
parent.Controls.Add(siteModule);
}
else
{
CachedSiteModuleControl siteModule = new CachedSiteModuleControl();

siteModule.SiteID = siteSettings.SiteID;//here it is possible that siteSetting is null
siteModule.ModuleConfiguration = module;
parent.Controls.Add(siteModule);
}

parent.Controls.Add(new LiteralControl("<br />"));
parent.Visible = true;
parent.Parent.Visible = true;
}
}
}