found using 2002.11.19.04 comm trunk bits on win2k. 1. make sure that you've browsed several pages in your current window (or tab) and do *not* start using typeahead find (see bug 177005). 2. hit the backspace key. expected results: should go back to the previously-viewed page. actual results: nothing happens. note: shift-backspace to go foward a page also doesn't work. fortunately, alt-left/right arrow shortcuts still work fine.
if i disable type ahead find --by adding user_pref("accessibility.typeaheadfind", false); to my prefs.js-- this is no longer a problem.
hrm, now i cannot reproduce this, after quitting and restarting a couple of times.