package python-speechd 0.7-5ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Binary package hint: speech-dispatcher

$ lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10

but i really was trying to force a distribution upgrade.
What i did was replace lucid with maverick on sources.lst and try to aptitude update and aptitude upgrade(and then dist-upgrade)
I also got (E:Error, PkgProblemResolver::Resolve generated breaks, this may be caused by held packages) while trying to upgrade through any means i tried...

ProblemType: Package
DistroRelease: Ubuntu 10.10
Package: python-speechd 0.7-5ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-29.57-generic-pae 2.6.32.28+drm33.13
Uname: Linux 2.6.32-29-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Sat Feb 12 04:13:51 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
PackageArchitecture: all
SourcePackage: speech-dispatcher
Title: package python-speechd 0.7-5ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1