that couldn't be caused by sim

thts where the processor is, n for sure it will hot, but not so obvious hot...

if u feel its hot like hell, better go replace it with a new one..

October?? In fact 2.3.3 is already better than 2.3.2 in terms of battery consumption. I doubt SE can do much in 2.3.4
--> SAUCE <--

once rooted more software can be use, and we can delete those not use to free use some space, like japanese keyboard

i rooted on 2.3.2 n ota upgrade to 2.3.3 without issue

Before we give you the rooting guide of Arc, I think you should do some reading on the rooting process and the pros/cons of them.

Anyway the Arc rooting link is : HERE

Try track id.. If urs can detect the song, meaning you are on locked bootloader..

Read thoroughly the guide first..

heavy brain, if yours i original, it should be lock

The feature is in arc also but you need to do it the hard way..

Ori or AP also should comes with locked bootloader. if you have an unlocked bootloader that means your phone set is not 1st hand.
Phone. Unless you install App2SD

on n off it, thts all

heavy rain, u goto root the phone, give permission to file and replace system file

No pain, no gain... 

If you on 2.3.3 and yours is locked bootloader, nothing much can be done, only way is to revert back to2.3.2 and use ota to update it to 2.3.3...

Learn bout flash tool first as you need to use it to downgrade.. But you need to change the firmware region as iianm malaysia region don't have ota, correct me if im wrong...