OK. I developed an ASP.Net application and deployed it on a SharePoint server by creating a Virtual Directory under the 80 hive of the SharePoint site. It is working fine on my dev box. When I deploy (pre-compiled app through Visual Studio 2008), I get the following error trying to access the aspx page
System.Security.SecurityException: Request for the permission of type 'System.Diagnostics.EventLogPermission, System, Version=22.214.171.124, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Just to make sure that the VirtualDirectory was setup correctly, I created an HTML file on the same location and it opens up fine. But ASPX pages throw the above exception.