Oblibion and hard drive issues

Hello,
I have been struggling with my inspiron 6400 and its TOSHIBA MK8032GSX (80 Gb, 5400 rpm) to get the highest possible speed in my hard drive. That's because of Oblivion: I am trying to avoid stuttering while the game loads new textures as I walk around ( specially outdoors, when new buildings appear ). So far I'm using small textures (which are faster to load), but it looks terrible. So I am trying to optimize it to change to Medium textures.

I ran HDtune 2.52 and these are the numbers:

http://img381.imageshack.us/img381/9435/hdtunebenchmarktoshibamk8032gs.png

Can you please run HDtune and post your results? It doesn't matter whether you have the same hard drive or not, I just want to compare ( but those of you with the same laptop please post it )
Anyway I would like to know what could I do to improve my HDD transfer rate. I defragment my HD everyday and I've set to Performance in the BIOS the HD Acoustic Management.
Anyone there with the same problem in Oblivion?
All ideas and opinions are welcome!

EDIT: Oblivion. I meant Oblivion. Sorry for misspelling

 

Oblivion is a hog of a game. There is an easy way to cutdown on the amount your hard drive is accessed for the game textures. That is getting more RAM. If you have 1GB+ your hard drive will be accessed alot less and improve your performance. I know this because I have oblivion, I added another 512mb of RAM and the game loaded alot faster.

 

That maybe right, but Oblivion doesn't load every texture on the game, no matter how much RAM you have; it does load the textures it needs depending on where are you going. That's way your HD is working every time you discover new places. Apart of that, I think textures are loaded in the VRAM (the RAM from your Video card).
I have 1gb, and playing in windowed mode and looking at task manager, Oblivion.exe never uses more than 400 Mb of RAM.
Maybe there is a way the game use a larger amount of RAM, thus improving stuttering problems?

 

The link to your image doesn't work - when you edited your post, it saved a version of the link with ... in it.

I doubt you have the same problem I have, though - I had terribly slow hard drive speeds, which turned out to be because I was running the drive in PIO mode rather than UDMA.

 

I fixed the link. Hope it works now.
My HD is working with UDMA, I checked it in Device Manager.
From what I've read, LOTS of people are having the same issue in Oblivion (stuttering) even with high-end video cards and insane amounts of RAM. So definitively is a HD problem. But how to solve it?