problem in gnome_vfs

[findarunhere]

Hi all
i got following error while using firefox(crashes) in mandriva. Anybody knows what this means?

(Gecko:9900): GLib-CRITICAL **: g_str_has_prefix: assertion `str != NULL' failed

(Gecko:9900): libgnomevfs-CRITICAL **: gnome_vfs_async_load_directory: assertion `text_uri != NULL' failed

(Gecko:9900): GLib-CRITICAL **: g_hash_table_foreach: assertion `hash_table != NULL' failed

(Gecko:9900): GLib-CRITICAL **: g_hash_table_lookup: assertion `hash_table != NULL' failed
/usr/local/firefox/run-mozilla.sh: line 131:  9900 Segmentation fault      "$prog" ${1+"$@"}

Thanks in Advance,
Arun