I want to make a video/slideshow from several images with some effects in Linux!
What programs do u recommend excluding FFmpeg?
If you're after something with a gui (I'm a command line freak, but I'd use a gui app for this too) pitivi, lives, Avidemux, Kdenlive or cinelerra might do the job. Blender also does video editing (there seems to be nothing it can't do).
Or if you wait or a while you'll be able to get Lightworks - a full professional NLE.