I almost always prefer private DS. See the VFP help on USE with the NOREQUERY nDataSession clause. That may help with the speed of opening the form with a private DS.

>I have forms that have a big grid. Clicking on the grid opens up a detail form displaying the same cursor, hopefully at the record that was clicked in the grid. (I pass the key value as a parameter and LOCATE FOR that value in the detail form.) I had one pair of forms where I had to give the detail form a private data session to make it work. Mysteriously it worked for the other form pairs. The problem refuses to appear in the debugger. I now have another form pair that just started doing something similarly wrong, after I changed the cursors somewhat. The detail form opens to the right record, but as soon as I click a nav button, it goes to the first record. It works correctly in the debugger (naturally). Changing the form to private datasession made it work correctly. However, that makes the form take longer to open, because the cursor is a view that takes a little while to join. Now I have that overhead for both the grid and the detail form. When the detail forms open,
>it .HIDEs the grid form without closing it, so the data session ought to be all right.