GoDaddy is still on 2.0.
Are you using C# code behind? If so, then comment out two of the "usings" on every code behind page--the two usings that refer to Linq.
using System;
using System.Collections;
using System.Configuration;
using System.Data;
//using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
//using System.Xml.Linq;
If you are just starting out, by commenting, I mean typing the two forward slashes in front of the line. This changes the color (letting you know it is now commented out) and the computer will ignore the line.
Let me know if you are using VB (I haven't tried anything there yet, but was planning to soon and this post would be a good point for me to jump into it.