screen &peripherals quit responding

[david Wagoner]

After opening apps or shells esp Firefox. the system will cease to respond to mouse or keyboard.only option is a power off reboot.
ubuntu 9.04 installed then updated to 9.10

ProblemType: Package
Architecture: i386
Date: Thu Dec 10 18:00:11 2009
DistroRelease: Ubuntu 9.10
ErrorMessage: trying to overwrite '/usr/share/icons/hicolor/16x16/apps/kimagemapeditor.png', which is also in package kimagemapeditor-kde4 4:4.2.2-0ubuntu1
Package: kimagemapeditor-kde3 (not installed)
ProcVersionSignature: Ubuntu 2.6.31-16.52-generic
SourcePackage: kdewebdev-kde3
Title: package kimagemapeditor-kde3 (not installed) failed to install/upgrade: trying to overwrite '/usr/share/icons/hicolor/16x16/apps/kimagemapeditor.png', which is also in package kimagemapeditor-kde4 4:4.2.2-0ubuntu1
Uname: Linux 2.6.31-16-generic i686