package fglrx 2:8.831-0ubuntu1 failed to install/upgrade: fglrx kernel module failed to build

[phobos]

ati install error

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: fglrx 2:8.831-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Sun Apr 3 00:10:22 2011
DistroCodename: natty
DistroVariant: ubuntu
ErrorMessage: fglrx kernel module failed to build
PackageVersion: 2:8.831-0ubuntu1
SourcePackage: fglrx-installer
Title: package fglrx 2:8.831-0ubuntu1 failed to install/upgrade: fglrx kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu1