Recently updated version of Java on a Windows PC to version 7 and JDownloader works great. Then update Java 7 on Ubuntu, but when you try running them JUpdate JDownloader or crashes. And is not executed. Shows a problem of lack of a file in the installation of Java. I run other Java applications and work perfectly. The funny thing is that in Windows works perfectly JDownloader. The version of Java 6 did not present that problem. I hope I can say it is. Not to return to Java 6. Thank you.