Couldn't execl robot child process: Permission denied

Unfortunately I ran into this problem today when using Jabref, a bibtex tool. It never happens to my windows system. With the help of google and the following hints, fortunately the problem was successfully killed. :)

===============================
original post
"execl" is a system call, So, the api was trying to run a native application to assume the controls of the keyboard and mouse.
When jvm tries to create a child process to execute this function, it receive the message from OS (linux): "Permission Denied".
Search for two files on directory jre/lib/i386: awt_robot and awt_robot_g. Then use "chmod +x" on both files as root and the Robots will be created without error messages.

Samir