<A target="_blank" href="http://crashtestchix.com/2011/04/05/uphill-climb-inotes-firefox-fix-not-available-for-8-5-1/">Marie Scott has posted part of a response from Lotus Support on the Firefox 4 problem</A>. At this time, there are no plans to "fix" the issue between Firefox 4 and iNotes 8.5.1.