There's a new version of Flash, but the update script is borked.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722416
# update-flashplugin-nonfree --install --verbose
options : --install --verbose --
temporary directory: /tmp/flashplugin-nonfree.H8wGKMECeo
importing public key ...
selected action = --install
installed version = 11.2.202.297
upstream version = 11.2.202.310
wgetoptions= -nd -P . -v --progress=dot:default
downloading http://people.debian.org/~bartm/flashplugin-nonfree/fp10.sha512.amd64.pgp.asc ...
--2013-09-11 14:18:49-- http://people.debian.org/~bartm/flashplugin-nonfree/fp10.sha512.amd64.pgp.asc
Resolving people.debian.org (people.debian.org)... 206.12.19.5, 2607:f8f0:610:4000:214:38ff:feee:b65a
Connecting to people.debian.org (people.debian.org)|206.12.19.5|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1273 (1.2K) [text/plain]
Saving to: './fp10.sha512.amd64.pgp.asc'
0K . 100% 98.9M=0s
2013-09-11 14:18:50 (98.9 MB/s) - './fp10.sha512.amd64.pgp.asc' saved [1273/1273]
verifying PGP fp10.sha512.amd64.pgp.asc ...
copying /var/cache/flashplugin-nonfree/install_flash_player_11_linux.x86_64.tar.gz ...
verifying checksum install_flash_player_11_linux.x86_64.tar.gz ...
wgetoptions= -nd -P . -v --progress=dot:default -O /tmp/flashplugin-nonfree.H8wGKMECeo/install_flash_player_11_linux.x86_64.tar.gz
downloading http://fpdownload.macromedia.com/get/flashplayer/pdc/11.2.202.297/install_flash_player_11_linux.x86_64.tar.gz ...
verifying checksum install_flash_player_11_linux.x86_64.tar.gz ...
unpacking install_flash_player_11_linux.x86_64.tar.gz ...
verifying checksum contents of install_flash_player_11_linux.x86_64.tar.gz ...
moving libflashplayer.so to /usr/lib/flashplugin-nonfree ...
setting permissions and ownership of /usr/lib/flashplugin-nonfree/libflashplayer.so ...
Flash Player version: 11.2.202.297
moving install_flash_player_11_linux.x86_64.tar.gz to /var/cache/flashplugin-nonfree ...
flash-mozilla.so - auto mode
link currently points to /usr/lib/flashplugin-nonfree/libflashplayer.so
/usr/lib/flashplugin-nonfree/libflashplayer.so - priority 50
Current 'best' version is '/usr/lib/flashplugin-nonfree/libflashplayer.so'.
calling update-alternatives ...
flash-mozilla.so - auto mode
link currently points to /usr/lib/flashplugin-nonfree/libflashplayer.so
/usr/lib/flashplugin-nonfree/libflashplayer.so - priority 50
Current 'best' version is '/usr/lib/flashplugin-nonfree/libflashplayer.so'.
already exists: /usr/bin/flash-player-properties
already exists: /usr/share/applications/flash-player-properties.desktop
already exists: /usr/share/icons/hicolor/16x16/apps/flash-player-properties.png
already exists: /usr/share/icons/hicolor/22x22/apps/flash-player-properties.png
already exists: /usr/share/icons/hicolor/24x24/apps/flash-player-properties.png
already exists: /usr/share/icons/hicolor/32x32/apps/flash-player-properties.png
already exists: /usr/share/icons/hicolor/48x48/apps/flash-player-properties.png
already exists: /usr/share/pixmaps/flash-player-properties.png
end of action --install
cleaning up temporary directory /tmp/flashplugin-nonfree.H8wGKMECeo ...
end of update-flashplugin-nonfree
I have the current version 11.2.202.310 so I guess it's ok now.
Yeah, it's fixed: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722416#20