I get nervous about switching, because if a menu or a form is bound to data in the private session via SKIP FOR in the menu or a bound grid on the form and somehow it decides to refresh while the datasession is switched, things go awefully wrong (as I'm sure you know).

Hmmm. Sounds like your forms have a mind of their own < s >. Mine seldom decide to refresh themselves on their own < s >

So if your form makes a call to a private datasession, and you get a bug in there, and you have something like SKIP FOR EOF('MyData') in your menu, and MyData is not available in the private session, you can't click on the debugger menu. Lots of fun :-)

I can't say that this has ever happened to me because the SKIP FOR conditions in my menus do not refer to data. I can see where that would be a problem...