I use Slackware and tried installing flash using the install_flash_player_10_linux.tar.gz file from the Adobe site (
http://get.adobe.com/flashplayer/). Unzipping and untarring the file left me with a libflashplayer.so file, no directories or anything else. I wasn't sure what to do with it so I downloaded the rpm file and installed as follows...
#rpm2tgz flash-plugin-10.1.85.3-release.i386.rpm
#installpkg flash-plugin-10.1.85.3-release.i386.tgz
#cd /usr/lib/flash-plugin
#./setup