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I have an MVC 3 site that uses IoC (Unity), and my model is generated w/ EF4 and POCOs. I am using an action filter to commit my UnitOfWork: public class UseUnitOfWorkAttribute : ActionFilterAttribute, IActionFilter { private readonly IUnitOfWork _unitOfWork; public UseUnitOfWorkAttribute() { _unitOfWork = IoCFactory.Instance.CurrentContainer.Resolve<IUnitOfWork>(); } void IActionFilter.OnActionExecuted(ActionExecutedContext filterContext) { _unitOfWork.Commit(); } void IActionFilter.OnActionExecuting(ActionExecutingContext filterContext) { } } However, even though the Commit() seems to be getting fired, it somehow seems to be caching what it thinks is "dirty". For example, in my controller, the following gets executed from a service class: var user = _userRepository.Single(u => u.Id == 2); user.DateAdded = DateTime.Now; Whenever I do a fresh build of the solution and hit this controller action, the change is actually committed. However, successive hits to the controller doesn't do anything. On the other hand, if I put a UnitOfWork in my controller and commit it following the service method call, it works as expected (every time I request the controller action): public AccountController() { _unitOfWork = IoCFactory.Instance.CurrentContainer.Resolve<IUnitOfWork>(); } public ActionResult Test() { var user = _userRepository.Single(u => u.Id == 2); user.DateAdded = DateTime.Now; _unitOfWork.Commit(); } So it definitely seems like some sort of caching is going on, but I can't figure it out what is getting cached -- the UnitOfWork, the ActionFilter, or the repository. Any ideas what could be going on? And if not, any ideas what else I could do to troubleshoot? Thanks in advance.

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