On my computer I typed in
firefox -safe-mode and pressed enter into my terminal and I got this back
(process:1967): GLib-CRITICAL **: g_slice_set_config: assertion `sys_page_size == 0' failed
** (firefox:1967): WARNING **: Invalid borders specified for theme pixmap:
/usr/share/themes/Lubuntu-default/gtk-2.0/images/null.png,
borders don't fit within the image
** (firefox:1967): WARNING **: Invalid borders specified for theme pixmap:
/usr/share/themes/Lubuntu-default/gtk-2.0/images/scrollbar_vertical.png,
borders don't fit within the image
Does anyone know what that means & if possible how to fix it?
Thank you