If anyone uses JDownloader od FreeRapid program he noticed that screen flickers everytime you start the program.
there is a fix
start Jdownloader or other Java app that causes you problems with:
java -Dsun.java2d.opengl=true -jar .jd/JDownloader.jar
I'm thinking of updating the jd srpm with edited start script, but maybe this will cause problems with no gl desktops??