When the network is too bad, Ubuntu update may be stuck on the download flashplugin, then error. Find a post on the U forum to successfully install Flashplugin-installerThe method:
1. First use sudo apt-get install Flashplugin-installerInstall the package, disconnect (or network switch) when you go to download the ADOBE-FLASHPLUGIN_11.2.202.238.ORIG.TAR.GZ software package, then download the interrupt and pop up the "download additional data is unsuccessful" notification.
2, remove the "download additional data unsuccessful" annoying notification, methods:
$CD/usr/share/package-data-downloads/
$sudo RM *-RF
$CD/var/lib/update-notifier/package-data-downloads/
$sudo RM *-RF
$CD/var/lib/update-notifier/user.d/
$sudo RM data-downloads-failed
3. Download adobe-flashplugin_11.2.202.238.orig.tar.gz using the multi-threaded download tool of Firefox browser.
4. Reinstall the downloaded adobe-flashplugin_11.2.202.238.orig.tar.gz package:
$ sudo dpkg-reconfigure flashplugin-installer
[sudo] password for Leejiafang:
Enter the path of the previous download package, OK.
Installing from local file/home/leejiafang/tmp/adobe-flashplugin_11.2.202.238.orig.tar.gz
Installing from local file/home/leejiafang/tmp/adobe-flashplugin_11.2.202.238.orig.tar.gz
Flash Plugininstalled.
Flash Plugininstalled.
5. For other packages in Ubuntu-restricted-extras ttf-mscorefonts-installerYou can also use the same method.
6, for some online use to delete the/usr/share/update-notifier/package-data-downloads-failed file method is wrong, the symptoms do not cure.
In fact, the main implementation of the document is/usr/lib/update-notifier/package-data-downloader, we look at this document to understand.
"Download additional data unsuccessful" annoying notification of the problem, has been confirmed by Ubuntu as a bug, but still no solution, so use the above method to manually delete the relevant files can solve the problem.
Ubuntu Offline Update Flashplugin