What's weird is that I don't have this problem with all my ubuntu 14.04 pc's.

palace4@ANTEC:~$ firefox 

(process:4421): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(firefox:4421): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised

(firefox:4421): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised

(firefox:4421): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised

(firefox:4421): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised
NOT SANDBOXED
[fresh] [warning] ppb_var_var_to_utf8, 'var' is not a string, (0)
[fresh  4514] not implemented: PPB_OpenGLES2VertexArrayObject;1.0
[fresh  4514] not implemented: PPB_OpenGLES2DrawBuffers(Dev);1.0
Vector smash protection is enabled.
[fresh  4514] [PPB] {zilch} ppb_network_monitor_update_network_list
[fresh  4514] [PPB] {zilch} ppb_flash_set_instance_always_on_top instance=11, on_top=1
[fresh] [warning] ppb_var_var_to_utf8, 'var' is not a string, (0)
[fresh  4514] [PPB] {zilch} ppb_network_monitor_update_network_list
[fresh  4514] [PPB] {zilch} ppb_flash_set_instance_always_on_top instance=12, on_top=1
[fresh] [warning] ppb_var_var_to_utf8, 'var' is not a string, (0)
[fresh  4514] [PPB] {zilch} ppb_network_monitor_update_network_list
[fresh  4514] [PPB] {zilch} ppb_flash_set_instance_always_on_top instance=13, on_top=1
[fresh  4514] [PPB] {zilch} ppb_network_monitor_update_network_list
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:843)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:5840)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:843)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:5840)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:843)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:5840)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:843)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:5840)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:843)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected
[fresh] [warning] handle_tcp_connect_stage4, connection failed to all addresses (127.0.0.1:5840)
[fresh] [warning] ppb_tcp_socket_get_local_address, not connected
[fresh] [warning] ppb_tcp_socket_get_remote_address, not connected