Arduino Yun - Linio Release 1.5.3 (reboot not working properly)

Hi,
I am happy since I received the shipment of my arduino yun,
but there is one problem that I have not solved till now, after i do sysupgrade linio to release 1.5.3, my Yun was not reboot properly, linio wont start after command reboot or scheduled reboot via cron.
just unplug and plug again the usb power jack, it will be return to normal, but if i command from SSH or cron job it will stuck on boot proccess and linux never started. This happened after a few times I did reboot command since i upgrade the linio.

for all your answers, I say many thanks.