package mono-jit 2.0.1-4ubuntu0.1 failed to install/upgrade: package mono-jit is already installed and configured

[fuji]

Binary package hint: mono

Was trying to install flashplugin-nonfreebeta_rc10.0.10.12ubuntu1_i386.deb (19.2 KiB) at https://launchpad.net/~thielmann/+archive/ppa after removing flashplugin-nonfree package. The installation failed, error message said flashplugin-nonfree was still installed. I'm sure I completely removed flashplugin-nonfree including extra audio support files. I followed the crash reporting process from there on and reached here. The reason why I wanted to install flashplugin-nonfreebeta is because Ubuntu 9.04 firefox flash is fine at youtube, but seemed to be choppy at another site. In Windows though sometimes that site lags, what I'm experiencing with Ubuntu Firefox Flash is too slow and different.

ProblemType: Package
Architecture: i386
DistroRelease: Ubuntu 9.04
ErrorMessage: package mono-jit is already installed and configured
Package: mono-jit 2.0.1-4ubuntu0.1
SourcePackage: mono
Title: package mono-jit 2.0.1-4ubuntu0.1 failed to install/upgrade: package mono-jit is already installed and configured
Uname: Linux 2.6.28-15-generic i686