Whats a kernel and an ODIN?   I read the first page bout rooting (I'm really new to this) and i dont really get it. 

ODIN is Thor's father, never see the movie meh? jk

Ok, briefly kernel is the earliest part of the program that loads after the phone boots up. it takes care of the basic stuff like system settings/partitions/file systems etc basically housekeeping stuff, before the main Android operating system is loaded.

ODIN is the program that is used to flash (ie write) a custom kernel onto the phone.

My 1st failure to unlock the screen, it was on standby, then i wanted to unlock, pressing the side button, or the hardware home button had failed to wake the phone up, trying to press the side button to off it, no reaction, screen still failed to lit up.

removed battery and pressed restart button... worked. and it booted up, now is good.
next time I dont know how much more serious this problem will be..

P.S: Please Do Not Comment or Say That My Device Is (Enter word)
I dont want to hear that rubbish, nor will I accept the fact that it is. not until my exams are over.

My 1st failure to unlock the screen, it was on standby, then i wanted to unlock, pressing the side button, or the hardware home button had failed to wake the phone up, trying to press the side button to off it, no reaction, screen still failed to lit up.

removed battery and pressed restart button... worked. and it booted up, now is good.
next time I dont know how much more serious this problem will be..

P.S: Please Do Not Comment or Say That My Device Is (Enter word)
I dont want to hear that rubbish, nor will I accept the fact that it is. not until my exams are over.

My 1st failure to unlock the screen, it was on standby, then i wanted to unlock, pressing the side button, or the hardware home button had failed to wake the phone up, trying to press the side button to off it, no reaction, screen still failed to lit up.

removed battery and pressed restart button... worked. and it booted up, now is good.
next time I dont know how much more serious this problem will be..

P.S: Please Do Not Comment or Say That My Device Is (Enter word)
I dont want to hear that rubbish, nor will I accept the fact that it is. not until my exams are over.

i really want sgs2 but wait for quadqore phone next year, stay with N1

i really want sgs2 but wait for quadqore phone next year, stay with N1

i really want sgs2 but wait for quadqore phone next year, stay with N1

when next year come....  you will saying wanna wait for hexacore phone d.. never ending chasing...

My 1st failure to unlock the screen, it was on standby, then i wanted to unlock, pressing the side button, or the hardware home button had failed to wake the phone up, trying to press the side button to off it, no reaction, screen still failed to lit up.

removed battery and pressed restart button... worked. and it booted up, now is good.
next time I dont know how much more serious this problem will be..

P.S: Please Do Not Comment or Say That My Device Is (Enter word)
I dont want to hear that rubbish, nor will I accept the fact that it is. not until my exams are over.

this problem sounds similar to Galaxy Ace's problems,
they call it SOD (Sleep of Death) there at SGA thread,
it means u cannot wake the phone up, unless u remove n reinsert the battery,
my SGA also happened few times ady,
almost every SGA user experience this SOD on their phone

dont tell me SGS2 also got this problems ,
hopefully its just a one time thing for u,
bcos im also waiting for this phone

with SGA we found out that the wifi is probably the culprit that caused the SOD,
not that we can confirm it tho, just an assumption,
did u on ur wifi when it happened?