Getting somethings to work in 64 bit can be annoying. There are tons of posts on how-tos and such, but I thought i’d toss up some quick links to help get things going:
Here is the link to get the Skype installer for 64bit, without having to do any hoop jumping. It just installs:
http://www.skype.com/go/getskype-linux-ubuntu-amd64
For Flash player 10 in 64bit, first run from term:
sudo apt-get remove flashplugin-nonfree
That’ll get rid of the busted 32bit version that gives you grey boxes everywhere. Then goto this link:
http://labs.adobe.com/downloads/flashplayer10.html
pull the file down, stick the libflashplayer.so file in the folder /home/username/.mozilla/plugins
Then just bump firefox and you’re all set.