Except nspluginwrapper doesn't seem to handle flash 10.1 very well. For example, don't right click on the flash test at http://www.adobe.com/software/flash/about/ Sadly nspluginwrapper's web site and subversion repository have fallen off the net.
solution is to use latest firefox 3.6.4;explained heayah: http://forums.debian.net/viewtopic.php?f=16&t=53036
"You need tender loving care once a week - so that I can slap you into shape." - Ellyn Mustard