Ubuntu 11.10 freezing on startup

Did you MD5 test the ISO you downloaded?

I have this problem, but before I used to have it with 11.04 now I still having it even if I install 11.10 erasing 11.04
There is many text jumping, blinking, and the computer does not start, just when I shut it down by force and turn it on again, sometimes I got lucky and starts but not all the time :/
Some of the text was too stopping crash report generator but I solved with this:
- Edit the file "apport" as superuser in /etc/default/
- Set 1 to Enabled (it was 0 by default in my case)
- Save file and restart

But still the problem, something about bluetooth but I doesn't even have bluetooth.
Battery state.
The messages that are enlisted in the question
I have a Toshiba
3gb RAM
AMD Turion(tm) 64 X2 Mobile Technology TL-60 × 2
64 Bit

 Had the same problem pulseaudio. installed 4 times .. The 5th time worked... How ? Do NOT install updates while installing 11.10.
To my surprise everything works great..

I solved some things
I changed:
etc/default/saned
etc/default/speech-dispatcher
etc/desault/diable: usr.bin.firefox

But now the problem is

fsck desde util-linux 2.19.1
/dev/sda1:limpio................. and numbers
By logic I cant edit or change this so I dont know what to do

Also add I did a clean install. In my case looked for answer did several that fix one problem that caused another error . The computer just wouldn't boot .Would fix pulseaudio but would get another error. Like I said in my post do not install updates while installing 11.10.

 Francisco , just reinstall 11.10 without downloading updates ,sounds like you where having same problems I was.

But I already had those problems with 11.04 and was like a day the computer was fine and the other just failed.
Are you sure this solve everything?

By this thing you mean not installing mp3, flash etc?

 I installed many programs now and it works .. I had exact same problem like i said installed 4 times downloading updates while installing and every time would get pulseaudio ... tried fixes and it caused other problems so I installed 11.10 without downloading updates while installing.. Just got it working right a few hours ago and been installing programs ,vlc ,skpe, etc and everything works .

OK I guess it worth the shot. Unless it's a hardware issue.

I don't like to install the updates either. There are a lot of default apps in the install which I like to haul out so updating them is a waste of time.

Is this now solved?

Not yet till someone taste it.

 Well one thing I did after installing and booted into 11.10 is make another account. Because in the pulseaudio error said something about users . Don't remember exactly what it said .

Yeah pre-users.
But I solved pulse audio.
Now the problem it's sda1 itself

Mite be a harddrive issue. If you reinstalled it would of fixed grub I'm running win7 and 11.10. Are you dual booting?

No, just ubuntu and the hard drive its new. By the way I installed 11.10 by a clean installation.

You can check your disc for defects ..put the ubuntu cd in reboot make sure boot to cd hold any key down ... my toshiba will beep loud .. My asus doesn't beep but it will bring up a menu where u can check disc for defects test memory .. or install or boot to first hard disk

Never did tell me if you reinstalled without downloading any updates. Check your hard drive first like I said with the ubuntu cd.

Just check my toshiba and 1 file error ..dual boot ubuntu and vista . Vista really sucks.