downloading the 64bit rpm (http://dl.google.com/linux/direct/google-talkplugin_current_x86_64.rpm) and unpacking it i find: ./opt/google/talkplugin/lib/libCg.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped ./opt/google/talkplugin/lib/libCgGL.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped ./opt/google/talkplugin/libnpgtpo3dautoplugin.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped ./opt/google/talkplugin/libnpgoogletalk64.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped so they are all 64bit native libs please drop emul packages deps
sorry, invalid as the binary /opt/google/talkplugin/GoogleTalkPlugin is still 32bit :(