DisableEventFiring is obsolete in SharePoint 2010

You can check this in msdn. However DisableEventFiring()/EnableEventFiring() still works as per Reflector.
Recommended way now is to use new property EventFiringEnabled. This gives us an option to check current status and save it. I found a great post from Adrian Henke and modified his code using this new feature.

	public class DisabledItemEventsScope : SPItemEventReceiver, IDisposable
	{
	private bool eventFiringEnabledStatus;
	public DisabledItemEventsScope()
	{
	eventFiringEnabledStatus = base.EventFiringEnabled;
	base.EventFiringEnabled = false;
	}
	#region IDisposable Members
	public void Dispose()
	{
	base.EventFiringEnabled = eventFiringEnabledStatus;
	}
	#endregion
	}

view raw DisabledItemEventsScope.cs hosted with ❤ by GitHub

The class DisabledItemEventsScope disable/enable event firing for the current thread and could be used in that manner at any place including code behind for the page or web part

	item["Title"]="New Title";
	using (new DisabledItemEventsScope())
	{
	item.Update(); // will NOT fire events
	}

view raw DisabledItemEventsScopeSample.cs hosted with ❤ by GitHub

BTW: There are couple useful SPList extensions to manage SPListItemEventReceiver collection

	// Sample:
	// list.AddEventReceivers(typeof(TestProject.ListItemEventReceivers.TestReceiver),
	// SPEventReceiverType.ItemAdded, SPEventReceiverType.ItemUpdated);
	public static void AddEventReceivers(this SPList list,Type erClassType,
	params SPEventReceiverType[] erTypes)
	{
	foreach (SPEventReceiverType erType in erTypes)
	{
	list.EventReceivers.Add(erType, erClassType.Assembly.FullName,
	erClassType.FullName);
	}
	}
	// Sample:
	// list.RemoveEventReceivers(typeof(TestProject.ListItemEventReceivers.TestReceiver));
	public static void RemoveEventReceivers(this SPList list, Type erClassType, params SPEventReceiverType[] erTypes)
	{
	List<SPEventReceiverDefinition> receivers = new List<SPEventReceiverDefinition>();
	for (int i = 0; i < list.EventReceivers.Count; ++i)
	{
	SPEventReceiverDefinition r = list.EventReceivers[i];
	if (r.Class.Equals(erClassType.FullName) && (erTypes.Length==0 || erTypes.Contains(r.Type)))
	receivers.Add(r);
	}
	foreach (SPEventReceiverDefinition r in receivers)
	{
	r.Delete();
	}
	}

view raw SPListExtensions.cs hosted with ❤ by GitHub