Ya, even with many small games, the touch will stop working. Like one game is Samurai 2, which I used to play very well on my Xperia Tipo but on this phone, suddenly it stops some paticular movement/action.
And about multi-touch, I have never used on this phone as it never worked, whereas I used to do various two fingers action very well on my Tipo.
I am just waiting for the next update(bug-free) as I know that hardware of this phone is strong enough to handle anything but if you face glitches in software every here and there, I would regret one day buying this useless beauty.
Sony, don't make us fool...please.!
What my Xperiance is that in stock firmware, my phone was somehow better and after updating, it started to give more problem which makes me feel that I am using a Sam**bleep** phone!