I'm using LINQ to SQL and after I submit some changes I want to spawn a thread which looks through all the changes and updates our lucene index as necessary. My code looks vaguely like:

(new Thread(() => { UpdateIndex(context.GetChangeSet()); }).Start();

Sometimes though I get an InvalidOperationException, which I think is because context.GetChangeSet() is not thread-safe, and so if the change set is modified in one thread while another thread is enumerating through it, problems arise.

Is there a "thread-safe" version of GetChangeSet()? Or some way I can do ChangeSet.clone() or something?