I updated to 14.04 from 12.04.03. I was using cinammon at that time. When I upgraded to 14.04 ,I got a serious problem. I was unable to login, as whenever I hit enter after entering password, it is taking me straight to login screen again.I unable to login like Guest even. So, here is my .xsession-errors file. possibly anyone could help. Thanks in advance.

Script for ibus started at run_im.

Script for auto started at run_im.

Script for default started at run_im.

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd main process ended, respawning

init: at-spi2-registryd respawning too fast, stopped

init: gnome-settings-daemon main process (14717) killed by TRAP signal

init: gnome-settings-daemon main process ended, respawning

init: update-notifier-crash (/var/crash/_usr_bin_gnome-session.1000.crash) main process (14607) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_ibus_ibus-x11.1000.crash) main process (14623) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_x86_64-linux-gnu_bamf_bamfdaemon.1000.crash) main process (14663) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_ibus_ibus-ui-gtk3.1000.crash) main process (14620) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_gnome-session_gnome-session-check-accelerated.1000.crash) main process (14612) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_gnome-settings-daemon_gnome-settings-daemon.1000.crash) main process (14616) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_unity_unity-panel-service.1000.crash) main process (14629) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_unity-settings-daemon_unity-settings-daemon.1000.crash) main process (14625) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_update-notifier_system-crash-notification.1000.crash) main process (14662) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_gnome-session_gnome-session-check-accelerated.127.crash) main process (14613) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_share_apport_apport-gtk.1000.crash) main process (14665) terminated with status 133

init: update-notifier-crash (/var/crash/linux-image-3.13.0-24-generic.0.crash) main process (14606) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_bin_Xorg.0.crash) main process (14609) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_ibus_ibus-x11.127.crash) main process (14624) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_ibus_ibus-ui-gtk3.127.crash) main process (14622) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_gnome-settings-daemon_gnome-settings-daemon.127.crash) main process (14618) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_unity-settings-daemon_unity-settings-daemon.127.crash) main process (14628) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_x86_64-linux-gnu_bamf_bamfdaemon.127.crash) main process (14664) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_bin_gnome-session.127.crash) main process (14608) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_lib_unity_unity-panel-service.127.crash) main process (14634) terminated with status 133

init: update-notifier-crash (/var/crash/_usr_share_apport_apport-gtk.127.crash) main process (14667) terminated with status 133

init: gnome-settings-daemon main process (14843) killed by TRAP signal

init: gnome-settings-daemon main process ended, respawning

init: gnome-settings-daemon main process (14850) killed by TRAP signal

init: gnome-settings-daemon main process ended, respawning

init: gnome-session (GNOME) main process (14727) killed by TRAP signal

init: gnome-settings-daemon main process (14859) killed by TRAP signal

init: logrotate main process (14570) killed by TERM signal

init: upstart-dbus-session-bridge main process (14683) terminated with status 1

init: Disconnected from notified D-Bus bus