In LINQ 2 SP we work with a data context. By default a data context has the property ObjectTrackingEnabled = true. This property is crucial for all other operations in CRUD except Read. I performed a mini experiment. I created 20 000 items in my task list. Every seventh item contains “pärla”. Allright, here is what I found out: 2857 / 20 000 items ObjectTrackingEnabled = true 07s.405ms ObjectTrackingEnabled = false

If you are just intrested in getting data, not writing to the source like SubmitChange, you can disable ObjectTracking and increase the performance. context.ObjectTrackingEnabled = false; ```I found this tip on page 248 in the book "[Sharepoint 2010 as a development platform](http://www.apress.com/9781430227069)"