>>Thanks Glenn for answering....Rob
>
>Rob, you might try deleting your Foxuser.DBF file from the VFP directory (or changing its name if you're nervous about deleting). It will re-create itself when you load VFP, and you can re-set your defaults. I just did this when I lost my Ctrl-S (Save) and Ctrl-V (Paste) functions. Still don't know the cause, but it worked! Before I deleted it, it had bloated up to about 600K. Now it's a slim 56K.
>
>At worst, you'll have to re-set your defaults one more time. At best, you'll be resetting them for the LAST time.
>
>HTH
>Barbara

This is interesting, I will keep a eye on the size of my own Foxuser.

Could SET RESOURCE be being set programatically ?
It may be worth trying SYS(2001,'RESOURCE') in the debug window when running some of the systems - to break if the setting changes.
This is 'clutching at straws' if you know what I mean, as I do not see any reason for this SET to change.