I have installed firefox1.5 with /usr/ports correctly,but when I launch it : hxsong at hxsong$ firefox& hxsong at hxsong$ /libexec/ld-elf.so.1: /usr/X11R6/lib/firefox/components/libgklayout.so: Undefined symbol "_Z22NS_NewXULPopupListenerPP19nsIXULPopupListener" [7]- Exit 1 firefox