Hello, Yes I can't say were it bugged during the installation cause pc
freezed fully with X screen on the actually formatting step, But Yes
this is what I meant That freeze didn't happen during the formatting
process itself but When it was just done and the installer loaded the
ext4 core and start using it to start writing the kernel and so to the
HD.

Now why I think that :, Just to recover the freeze I of course performed
I hard reset, And restarted the installation from scratch. Of course on
the menu where tho choose the disk and so I took I closer look and saw
that the HD in my case sda1 was indeed formatted ext4. Should it have
crashed during the formating It should have be an unknown HD formatting.

But here again it does have nothing to do with the installer or
formatting program itself, Since I alway's succeeded finally to have a
succesfull installation of ubuntu 10.04 . But once it was installed I
suffered from the random freezes at will. Unpredictable not very
frequent at all. on ext4 file system .

When I install the 10.04 But during the format step I choose to format
ext3 off course append the / as directory, And yes I reserve between
4200 MB and 5000 MB for a swap partition (just a little more then my RAM
capacity) Which a format into an extended linux swap partition. It goes
like a train +- 15 min to have a full install from scratch and this is
fast. Off course after I need to update and so one that's logic.

I'm willing to use an other kernel, But it needs to have new basic ext4
kernel drivers as well as there is the problem I guess.

And The whole pc is free hardware But not my graphic card it is indeed
NVIDIA . But this will not be a big problem as it runs fine whithout the
proprietary NVIDIA kernel modules (of course overlay, 2D, 3D and all
those stuff will not work then but the basic functions well after I
still can compile the nvidia proprietary kernel  at least ,,?? according
info into lucid the current stable kernel does not support the basic
compile programs provided by nvidia itself so the only way to install
them is true the non free driver installation program from ubuntu itself
for me currently they are NVRM: loading NVIDIA UNIX x86_64 Kernel Module
195.36.24

What i can try is the basic Maverick If i'm not wrong they are all on
the beta release ? If there the ext4 core drivers are updated it's very
usefull and it will not be a wast of time in trying .

To Put something's clear (yes sorry my English isn't good at all and the
writing even a disaster)

The problem is NOT an installation and NOT a formating issue.
   But installation can be affected from this problem.
The problem only and only occurs on ext4 formated HD witht fast ram and fast HD
  so ubuntu on ext3 NOT affected 

The effect's are random pc freeze NOT frequent absolutely unpredictable
variating from once a week till sometimes 3 times in a day.

Due too the sudden instant freeze no debug or error repport is made as the pc 
full lock's up.
After restart (hard reset) THERE is ALWAYS a REPORT from HD recovery about some 
wrong inodes etc....

Very few I now but well fact's

-- 
ubuntu 10.04 ext4 fast Ram and Fast hd's freezes at random
https://bugs.launchpad.net/bugs/632346
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