package kdm 4:4.2.2-0ubuntu2 failed to install/upgrade: ??? pre-removal script ?????? 1

[snhfng]

Binary package hint: kdebase-workspace

in gnome environment,i was removing the kde,it reported that will shutdown kdm,than my computer was restarting, i waited for a long time ,it looks like stopping , i can input letter at the screen ,so that i pressed the poweroff button

ProblemType: Package
Architecture: amd64
DistroRelease: Ubuntu 9.04
ErrorMessage: 子进程 pre-removal script 返回了错误号 1
NonfreeKernelModules: fglrx
Package: kdm 4:4.2.2-0ubuntu2
SourcePackage: kdebase-workspace
Title: package kdm 4:4.2.2-0ubuntu2 failed to install/upgrade: 子进程 pre-removal script 返回了错误号 1
Uname: Linux 2.6.28-13-generic x86_64