So Jack died. 
  
And man... I was not happy with that. 
 
She just got shot because a ship got attacked? 
 
Really?   
 
It was the most depressing thing ever. It's not like she was fighting or anything. She died INSIDE OF THE SHIP!!!!
 
And everybody else survived. 
  
... Man... It really bummed me down and I wanted to restart the game but that's gonna another 24 hours(my total play hour was 25 hours) 
 
ARRGHHH!!! 
 
So does everybody survive if everybody's loyalty is high than normal?

" Everyone must be loyal, you must make all the right choices in the last mission, and you must have all the ship upgrades. "

i did it first try 
not to be a jerk 
just get loyalty all ship upgrades and chose the right people for the job

You save Jack in the Normandy by upgrading the ship's armor, I believe.

I'd kind of liked a spoiler tag?

AAAWWWW you spoiled it. Damn it. What happened to spoiler warnings?

I know what you mean dude, Jack died on my run because of the fight between her and Miranda, I wasn't 75% Paragon or Renegade so one of them had to not trust me anymore.  Really sucked :/

I had all the upgrades and loyalties and the resident singer still snuffed it on the way back to the ship.  Kinda annoying.

Frpm what I can tell, you can do everything "right", and still have one of the weaker characters die, esp jack and mordin.  I did the first time, played again with the exact same choices, and everybody lived that time....

" i did it first try not to be a jerk just get loyalty all ship upgrades and chose the right people for the job "

I was lucky not to lose anyone. Though the loss of Jack doesn't really bother me at all. She was an annoying character with way too many issues to be bothered with. Hence why it got to the point where all she'll say to me on board the ship is F#$% Off. 
 
FrogSox

" @laalipop: I brought Garrus and Jack along with me to fight the Terminator and no one in my team died.  Zaeed wasn't even loyal to me and he didn't die in the climax.  I guess I'm just that awesome of a commander! XD "

I would pay to kill Jack off....... wait... what did I just do there.
 
Anyways, i don't like that character, shes ugly and annoying and UGLY!  Seeing as you know a guy who can take care of her I'd love it if you'd introduce him to me.

Hehehe... this topic is funny.  Garrus is pretty ugly, but no one wants to kill him off because it's okay for dudes to be ugly.
 
Also, keep your save where characters die and it hits you on a personal level.  If you go back and reload a save, it will destroy any verisimilitude the game has and drastically reduce the effect the story has on you.  I know it sucks, but it's truly for the best.