Its probably that idiotic W98 that screws up your Netscape. It does with mine. Try activating your Norton Crashguard. When a screwup occurs hit "Revive". Then hit "Freezecheck". After that hit "close" on the little notice thing then close all Crashguard windows. The thing will work ok from then on.
My Crashgaurd utility helps out when my NS browser crashes in PPRuNe chat.