It's easy to be impressed by Apple's Time Machine backup feature. It works in the background, is seamlessly integrated, and when you need to get to restore something whoa..
If you use a proprietary Flash plugin on Ubuntu and your mouse clicks often wont work you're experiencing a bug which seems to be quite common.
When going to sleep I sometimes like to leave my computer on playing ambient music from an internet radio station. It's a really good intro to the dreams.
Years after Second Life hit the scene there is still no good stable Second Life client for GNU/Linux which is a damn shame, especially given that Second Life takes great advantage of Linux by running
How about a new tip?
You can find some more tips in an old tips thread.