My users run forms in 10g in the web browser (IE v7). Sometimes when they navigate away from the browser to do something, or a form is runnign a long time, and then return to the browser, the area that had the form showing is now covered in grey. Question: 1- what causes that 2- how do we avoid that happening 3-What can the user do to refresh the grey area with what was there before?

Software/Hardware used:
Oracle 10g forms on MS 2003 R2 web application server