Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3a) Gecko/20021129 Reproduce step: 1. Open Inspector; 2. Open Mozilla; 3. Change the on/off state of sidebar; 4. Quit mozilla and restart; Actual result: the sidebar state isn't changed.
bug 163816 is the real cause of this. *** This bug has been marked as a duplicate of 163816 ***