I know a lot of people out there like to take notes with Linux, and probably didn’t come across this program yet, as it look me a bit googling to find it again. The program is called KeepNote, and is a fantastic program for taking notes. I use it with Dropbox, and store all of my notes there and that way it is synchronized to all of my systems. The program itself is open source and free, and you can support it by making a donation on the homepage.
I really like KeepNote, and the ease at which I can drag and drop media to it. One thing I did set in preferences was to only autosave every few minutes, otherwise Dropbox is constantly being updated:
The top toolbar is well thought out and very intuitive for formatting. It also supports all of the standard keyboard shortcuts, such as CTRL-B for bold etc. If you are looking to try it out, the author has a .deb package on the homepage that installs no problem (Ubuntu Jaunty AMD64 here).