>Either this is a low memory bug, or something nasty is happening in my code somewhere.

I've seen something weird in the grid related to the appended record.

After my append, I usually do this code to force a refresh. My problem was that sometimes, the appended record was not shown. So, I solved this by using this code. Maybe it might help you.

* Force a refresh of the grid by zooming
* the header height to the full size of the grid
* In this example, Recherche is the name of the grid
LOCAL llOldLockScreen,lnOldRechercheHeaderHeight
llOldLockScreen=_screen.ActiveForm.LockScreen
lnOldRechercheHeaderHeight=_screen.ActiveForm.Recherche.HeaderHeight
_screen.ActiveForm.LockScreen=.T.
_screen.ActiveForm.Recherche.SetFocus()
_screen.ActiveForm.Recherche.HeaderHeight=_screen.ActiveForm.Recherche.Height
_screen.ActiveForm.Recherche.HeaderHeight=lnOldRechercheHeaderHeight
_screen.ActiveForm.LockScreen=llOldLockScreen