I've been waiting for xperia z to replace arc and now when z price has dropped, z ultra launched and after touching and playing with it for a couple of minutes, i'm slowly attracted to XZU pulak ...

My Q are
1. Is the XZU camera is comparable to arc or better?
2. Will it better to wait for Honami and compare it with XZU before I commit myself to XZU? Any significant advantage of Honami compared to XZU beside camera?

Thanks for the respond. I'm not first step mover so getting newly launch phone is not a priority (that's why I wait for Z quite some time so that the price dropped but then XZU offers different experience with it's large screen  ).

it's just that from what i read honami strength is in it's camera but I don't really focusing on that as I'm already satisfied with arc's camera for a casual picture. if honami only beat xzu on camera's department, then my choice will certainly goes to XZU due to it's larger screen. unless if XZU camera lose to arc camera, then I might need to reconsider 

same glitch-bug ive been facing.
just ignore it or restart your phone if this bug persists

Engadget 19Aug review titled : Sony Xperia Z Ultra review: the best phone you'll probably never buy
WRAPUP :
Just like we saw with the Samsung Galaxy Mega, your decision to purchase the Xperia Z Ultra depends mostly on its size. The Z Ultra doesn't offer any unique traits that would make people want to deal with its massive frame if they don't want to, and the price is going to scare off shoppers who are on the fence. For those dead-set on a larger smartphone, however, this is definitely the best 6-plus-inch device you can buy. Sony designed a sleek and good-looking handset with a few tablet tendencies, and you'll absolutely love the display and over-the-top processing power contained within its chassis. Without a doubt, its size and price are the two most critical factors, and you've probably already made up your mind without even using it. In short, your decision to buy (or not buy) the Z Ultra should be a quick one: you'll either love it or hate it, but you won't stay neutral for long.

http://www.engadget.com/2013/08/19/sony-xp...z-ultra-review/

Yes.  same bugs.

Wait until login. Now immediate goto display and tick back the Optimize Backlight and shutdown the phone.

In your next startup the phone,  the fake hang issue will not happen and you can decide want to use optimize backlight or not.

But, just make sure you must tick back the Optimize Backlight before you plan to switch off the phone again.
Conclusion is there is no fake hang when the Optimize Backlight is turned on before you shut down.

The SOD after lock the screen won't happen if your startup never face fake hang.