I have caught on the internet today that Kdevelop IDE of version 4 is newly out.
KDevelop PHP IDE 4.0 in Fedora 12

It happened once or twice that when I was opening many files and projects simultaneously the Netbeans IDE started to become irresponsive.
I could not get splix driver to set up in a normal way. I used the DVD provided with the printer to install the proprietary driver (or can be obtained get from Samsung web site).
I have found a pretty helpful article for ffmpeg recompile: http://fozzolog.fozzilinymoo.org/tech/2009/11/recompiling-ffmpeg-for-fedora-12-to-add-faac-support.html . However, it looks like the instructions were incomplete.
Please refer to http://wiki.lynxworks.eu/misc/e1550#fedora. Install usb_modeswitch: sudo yum -y install usb_modeswitch