Vista - Vista Disk Defragmenter

Hello folks.
I've got 3 hard drives installed on my computer; C:, D:, E:.
I use C: for the OS and programs.
I use D: and E: for storage.
When I boot-up or re-start Vista the Disk Defragmenter starts up and starts
to analyse all the disks.
To make sure I'm on the right track, I click Start/All
Programs/Accesories/System Tools/Disk Defragmenter and sure enough it says
that it's 'Analysing Disks'.
I've got the 'Run on schedule' box un-ticked so it's greyed out.
I've re-installed Vista as an upgrade twice.
Is there any way to uninstall the Vista Disk Defragmenter?
There must be something wrong somewhere, I don't want to defrag my hard
drives everytime I boot-up.
Thanx in advance.

Have you checked the startup programs?

"zybbok" <zy.bbok@zen.co.uk> wrote in message
news:egXRZX06GHA.2384@TK2MSFTNGP04.phx.gbl...
> Hello folks.
> I've got 3 hard drives installed on my computer; C:, D:, E:.
> I use C: for the OS and programs.
> I use D: and E: for storage.
> When I boot-up or re-start Vista the Disk Defragmenter starts up and
> starts
> to analyse all the disks.
> To make sure I'm on the right track, I click Start/All
> Programs/Accesories/System Tools/Disk Defragmenter and sure enough it says
> that it's 'Analysing Disks'.
> I've got the 'Run on schedule' box un-ticked so it's greyed out.
> I've re-installed Vista as an upgrade twice.
> Is there any way to uninstall the Vista Disk Defragmenter?
> There must be something wrong somewhere, I don't want to defrag my hard
> drives everytime I boot-up.
> Thanx in advance.
>