I am currently running Fedora 14 64bit with Gnome on my HP Touchsmart.
I recently tried the RecordMyDesktop gtk app to make a screen capture video. I found that there were issues with the audio recording procedure using my laptop's on board mic. I tried Istanbul, another desktop recorder, before moving on to try the gnome sound recorder. I had no luck recording audio with any of these applications. I was, however, able to record sound through the terminal using arecord.
I didn't know where to start working on this issue and would gladly take any help I can get. Also, if more information is needed to help with a diagnosis, I will gladly post it.