Hi - Is this a filler form? I'm wondering if the users who have the issue maybe have a "bad" copy of the form cached? So - maybe on one of the users w/ IP 2010 who is having the issue, you could remove the form from the cache and see what happens. Open InfoPath Filler, under New, find the form template, right click and select Remove. Then reopen the form from its published location and see what happens.... that's about the only thing I can think of, unfortunately.
Hilary Stoupa
