I'm running 11.04 on an X120E. It seemed like the wireless driver was causing random crashes (I'm using a wireless N home network). I tried installing the driver from the realtek website. This caused Ubuntu to consistently crash on startup. So I uninstalled the driver and replaced it with the rtl8192ce-dkms package from Keng-Yu Lin's hwe-wireless PPA (version 2.6.0005.1116.2010-1ubuntu1~maverick2). It hasn't crashed since.
I'm running 11.04 on an X120E. It seemed like the wireless driver was causing random crashes (I'm using a wireless N home network). I tried installing the driver from the realtek website. This caused Ubuntu to consistently crash on startup. So I uninstalled the driver and replaced it with the rtl8192ce-dkms package from Keng-Yu Lin's hwe-wireless PPA (version 2.6.0005. 1116.2010- 1ubuntu1~ maverick2) . It hasn't crashed since.