For those using the slackbuilds.org script, download the
install_flash_player_10_r42_linux.tar.gz source file, edit the version in the slackbuild script, and build a new package. Worked fine for me.
The Adobe source file contains only the libflashplayer.so file.
Based upon past practices, the slackbuild for 12.2 probably won't be updated so those using 12.2 will have to manually update the slackbuild script anyway.