java plugin segmentation fault

[Nephelauxetic]

Binary package hint: gcjwebplugin

When I go to Sun's java installation check site (http://www.java.com/de/download/installed.jsp?detect=jre&try=1) a window is popping up and the browser closes immediatly

Description: Ubuntu 8.10
Release: 8.10

nschmid@nathan-laptop:/usr/lib/jvm/java-6-sun$ firefox
GCJ PLUGIN: thread 0x94b830: NP_Initialize
GCJ PLUGIN: thread 0x94b830: NP_Initialize: using /usr/lib/classpath/gappletviewer.
GCJ PLUGIN: thread 0x94b830: NP_Initialize return
GCJ PLUGIN: thread 0x94b830: GCJ_New
GCJ PLUGIN: thread 0x94b830: plugin_data_new
GCJ PLUGIN: thread 0x94b830: plugin_data_new return
GCJ PLUGIN: thread 0x94b830: plugin_get_documentbase
GCJ PLUGIN: thread 0x94b830: plugin_get_documentbase return
gcjwebplugin.cc:978: thread 0x94b830: Error: Failed to read line from whitelist file.
GCJ PLUGIN: thread 0x94b830: NP_GetValue
GCJ PLUGIN: thread 0x94b830: NP_GetValue: returning plugin description.
GCJ PLUGIN: thread 0x94b830: NP_GetValue return
GCJ PLUGIN: thread 0x94b830: GCJ_GetValue
GCJ PLUGIN: thread 0x94b830: GCJ_GetValue: returning TRUE for NeedsXEmbed.
GCJ PLUGIN: thread 0x94b830: GCJ_GetValue return

(firefox:9040): Gdk-CRITICAL **: gdk_window_get_user_data: assertion `window != NULL' failed

(firefox:9040): Gtk-CRITICAL **: gtk_container_add: assertion `GTK_IS_CONTAINER (container)' failed

(firefox:9040): Gtk-CRITICAL **: gtk_widget_realize: assertion `GTK_WIDGET_ANCHORED (widget) || GTK_IS_INVISIBLE (widget)' failed

(firefox:9040): Gtk-CRITICAL **: gtk_socket_get_id: assertion `GTK_WIDGET_ANCHORED (socket)' failed
Segmentation fault