This doclet describes some configuration for google-chrome on 64-bit linux (e.g., support for 64-bit flash).
At this time (May 2011) the 64-bit flash library is only in beta, which means that manual install is required. The codename from Adobe for 64-bit flash is Flash Player “Square”. Download the plugin and install to the mozilla (yes mozilla) plugin directory. See doco at Adobe Labs Flash Square
bash $ wget http://download.macromedia.com/pub/labs/flashplayer10/flashplayer10_2_p3_64bit_linux_111710.tar.gz
bash $ tar xvf flashplayer10_2_p3_64bit_linux_111710.tar.gz
bash # cp -i libflashplayer.so /usr/lib64/mozilla/plugins