package fglrx 2:8.723.1-0ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

[Alim Akyol]

Fresh install of Ubuntu 10.04.1 LTS.
I applied updates first. Then I used System -> Administration -> Hardware Drivers and clicked "Activate" for ATI driver.
It downloads the driver but fails during install.
It happened before.
Also, I'm not able to install Ati 10.9 driver.

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: fglrx 2:8.723.1-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.32-24.43-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
Architecture: amd64
Date: Tue Sep 21 10:21:49 2010
DkmsStatus: fglrx, 8.723.1: added
ErrorMessage: subprocess installed post-installation script returned error exit status 10
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: TOSHIBA Satellite P200D
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=42409abe-3ca9-453c-a0cf-c459bcd138d6 ro quiet splash
SourcePackage: fglrx-installer
Title: package fglrx 2:8.723.1-0ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10
dmi.bios.date: 01/15/2010
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.70
dmi.board.name: JASAA
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV1.70:bd01/15/2010:svnTOSHIBA:pnSatelliteP200D:pvrPSPBQE-029011TE:rvnTOSHIBA:rnJASAA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite P200D
dmi.product.version: PSPBQE-029011TE
dmi.sys.vendor: TOSHIBA
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.32-24-generic