If you are talking about the ActiveX listview control then try the following (I cant remember where I saw the original idea):

ThisForm.LockScreen = .T.

ThisForm.loListView.Enabled = .F.
ThisForm.loListView.Height = 99999

*!* Add items here.

ThisForm.loListView.Height = 100 && Original Height.

ThisForm.LockScreen = .F.


This will increase the load performance (it does on TreeView control).