After upgrading application to 11g, on a particular form clicking any key locks the form.

Hi,

So this is a strange problem.  We recently upgraded our application from 10gR2 to 11g.  We have one particular form, whose only purpose is to provide the user with a series of forms that are available to navigate to based on the type of  record they are working on.  The user double-clicks a radio-item to navigate to the form.  We recently found that the forms works great...unless the user attempts to use the keyboard.  The "tab" and "alt" keys work fine, but if they click any other key on the keyboard - CTRL, "t", "6", etc - the screen completely