Share your experience!
the horizontal mid region of my touch screen becomes senseless sometimes. then i have to tap very hard at it and sometimes it doesn't work even by tapping that hard. otherwise except mid region other regions i.e. top and bottom works well.
to diagnose it i installed multi touch tester from playstore and i found that wen my finger passes thru mid region while sliding screen blinks as if there is no finger. please help me out of this problem.
Check your RAM, hoew much free there!!!!
It's not about RAM !!! Some users (include me) have this problem ! i thought it's a Hardware Problem but now i think it's a software problem,like signal drops on .162 . i hadn't signal drop's problem but it seems it's like that 
what's your firmware Version ?! is it .184 ?!
Please share your build number and if you have made any software reinstall lately.
my build number is 6.0B.3.184. about 25 days before i had contacted a local sony service centre because of battery problem and a dealer over there said that he has reinstalled software on my phone.
since then one more problem has also crept in whenever i use my phone as a modem either thru usb tethering or thru wifi hotspot net conection gets disconnected every alternate minute but it works well when i use net in my mobile.
plz suggest some way out of this messy situtation and how sort this out.
will ics upgrade fix everything.
Had you this problem before .184 ?! some guys had this before .184 but for me,it happened after updating to .184 
my build number is 6.0B.3.184. about 25 days before i had contacted a local sony service centre because of battery problem and a dealer over there said that he has reinstalled software on my phone.
since then one more problem has also crept in whenever i use my phone as a modem either thru usb tethering or thru wifi hotspot net conection gets disconnected every alternate minute but it works well when i use net in my mobile.
truly speaking i didn't experience it before as such but i didn't use to use my mob much at that time. i am using it more now.
so may be if it was there i couldn't have noticed due to my seldom usage.