...message is not defined, line 842? got firefox 2 over winxp sp3. gmail works fine. only yahoo mail won't open/load as it should, instead pops msgs like the above (a 2nd one reads smthng like "attach folder nodes to folders is not defined, line nr 869") , switching to classic turns the webpage into a long scrollable one, like the all the buttons were aligned on left in html. emptied cache/cookies, did whatever was to be done, still the same. help pls?