Several daily reboots recently

Hi,

Since few days, my Vu Duo with OpenPli 4 and recent upgrades (through regular opkg upgrades), my Vu Duo reboots several times a day, suddenly, without any message nor icon. It justs reboots while watching TV.

But, yesterday, it stuck on "starting" for a while, then I switched it off then on. And since then, it does not start, only the red light is on.

Do you think it is a hardware issue? Have you already seen/heard about a similar issue?

Thanks.