First of all, appreciate android1234567 for bringing us the latest version of Android to our Sensation.
However, I found that my device was stuffing from these scenarios:
Device become unresponsive after typical usage (e.g. unable to lock screen, switch to other application, unlock the device). In this situation, the device "hang up", showing the same scren until (Reboot was triggered from power button or removal of battery) Refer to 20140116 logcat
Missing notification (Download Triggered from internal browser doesn't visible in the notifiction bar, but visible in the Downloads app, Refer to 20140117 logcat
WhatsApp failed to create daily backup
unable to install some apk (such as adobe flash player - I hate to use this app, but may website require this damn thing ; is that SeLinux related)
edit : it seems that the first scenario was caused by the second one, since after reboot the missing notification appeared immediately
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