I can confirm the problem and I solved it by simply adding some FAIL="false" into /usr/sbin/update-flashplugin.
But the package maintainer should add a fixed package so that all users can install flash easily. The backport version couldnt be installed on my platform too Im using Dapper with all updates deb http://de.archive.ubuntu.com/ubuntu/ dapper main restricted universe multiverse deb-src http://de.archive.ubuntu.com/ubuntu/ dapper main restricted universe multiverse deb http://de.archive.ubuntu.com/ubuntu/ dapper-updates main restricted universe multiverse deb-src http://de.archive.ubuntu.com/ubuntu/ dapper-updates main restricted universe multiverse deb http://security.ubuntu.com/ubuntu dapper-security main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted universe multiverse -- Running command: sudo update-flashplugin Gives result: automatic installation failed due to network problems or upstream changes https://launchpad.net/bugs/62060 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs