flashplugin-nonfree on Debian GNU/Linux amd64

installation of flashplugin-nonfree resulted in:

*** NSPlugin Viewer *** preloader not found
nspluginwrapper: no appropriate viewer found for /usr/lib/flashplugin-nonfree/libflashplayer.so

debugging went along the lines of

ldd /usr/lib/nspluginwrapper/i386/linux/npviewer.bin

and finding that some libs were missing...
(in between i also found that linux32 should be installed - but wasn't. strace -f was helpful...)
...what helped in the end:

aptitude install -t testing linux32 ia32-libs ia32-libs-gtk flashplugin-nonfree/unstable

references:

1. https://bugs.launchpad.net/ubuntu/+source/nspluginwrapper/+bug/235946
2. https://bugs.launchpad.net/ubuntu/+source/flashplugin-nonfree/+bug/182013