Exception: New transaction is not allowed because there are other threads running

this was crazy the solution was found in the following thread

http://stackoverflow.com/questions/2113498/sqlexception-from-entity-framework-new-transaction-is-not-allowed-because-there/3902790#3902790

Reason: we cannot do savechanges while still the reader is open.

//This will fail because we are doing savechanges while the reader is open
xs= Dataservice.GetX().Where(x=>!x.Ideleted)

foreach(x in xs)
{
//do something
Savechanges()
}

//this will succed becasuse we did a tolist(which closed the reader) and then did savechanges

xs= Dataservice.GetX().Where(x=>!x.Ideleted).ToList();

foreach(x in xs)
{
//do something
Savechanges()
}