Flash for F-15 -

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Is your F-15 is 64bit?
If so, you can installed the flash on your with following.

# mkdir temp_flash
# cd temp_flash
# wget 
http://download.macromedia.com/pub/labs/flashplatformruntimes/flashplayer11/flashplayer11_b1_install_lin_64_071311.tar.gz
# tar xzvf flashplayer11_b1_install_lin_64_071311.tar.gz
# cp -ip libflashplayer.so /usr/lib64/mozilla/plugins
# chown root:root /usr/lib64/mozilla/plugins/libflashplayer.so