[Outdated] I've found that the Flash plugin for 10.04 is less than spectacular out of the box. I suspect it has something to do with the 64bit OS and found this article explaining how to fix things up. Basically, here are the steps: Download 64bit installer . Close browsers Make installer executable, run it. "Remove Flash" Add 64bit Flash That's it. [Update] With the release of 10.2, we're basically back to square one again. However, I found a slightly better method of getting the latest version installed this time around. Since it relies on someone's PPA, it may or may not work for forever, but here's what I did *this time*. sudo add-apt-repository ppa:sevenmachines/flash && sudo apt-get update && sudo apt-get install flashplugin64-installer After that, if you want 10.3 or later, you need to download the .tar.gz from Adobe Labs (64bit version, that is), extract the .so and replace every same-named .so on your system.