Xbox360 Glitch/Freezing when startup

I have this same problem too, except mine doesn't take awhile to turn on or whatever. it just freezes before i log in. have you gotten yours fixed yet? if so please help me.

I have a similar problem, such as the Black Ops freezing after a certain amount of ingame time. Do all your games freeze? Some of my games freeze at startup, and others gave graphical glitches, while others freeze after entering gameplay. Whats really weird
is that FIFA 10 freezes at startup, but FIFA 11 doesn't freeze at all.

The only thing I believe "and please don't trash me for thinking", is that there was an error in the update and it either contains corrupt files, or it is so off that the system is going haywire with errors and cant catch up. before this problem occurred
for me I first noticed my power cubes sleep mode acting up immediately after update, then same as everyone else since the update, about three days and then im down to tricking my xbox to work, which btw worked absolutely positively fine before this stupid
pointless update. Xbox is turning out like PlayStation, they just have to have all these advertisements and random bs that pointless to gamers. I mean if I wanted to watch adds for cars or deodorant, I would watch tv. blaaaaaa. can you tell im frustrated...
Hopefully a fix is in the works, or I am going back to pc. If any one finds better way to trick there system for now please let me know... Btw to prove my theory about the hdd being fine. once I am able to trick my xbox into starting up by disconnecting
my network cable, turning the console on and loads right up, I load minecraft which is on harddrive and it works fine. once game is loaded I can connect to live, but ill be damned if I hit the home button( lol after that its about a ten min wait till home
screen goes away.

If you cannot get past that loading screen with the HDD inserted at all, then the drive will need to be repaired or replaced. If you purchased it with a new console, it will have the same one-year warranty as the console. If it was purchased new on its own,
then it should have a 90-day warranty.

If you'd like to set up a repair, you can reach our phone team at 800-4MY-XBOX.

it is not the hdd failing it is the update. too many people are having the same problem around the same update for it to be hardware.