QProcess problem

[Mystical Groovy]

Hey all,
I have a strange problem with QProcess, I use QProcess and system command "whoami" to get current logged in user.

/** where "user" is the QLabel"**/
	QString whoamiCom = "/usr/bin/whoami"; //i also tried with just "whoami"
	QProcess *userproc = new QProcess(this);
	userproc->start(whoamiCom);
 
	user->setText(userproc->readAllStandardOutput());
        /**I also tried using this method:
          QByteArray result = userproc->readAll();
	user->setText(result); **/

/** where "user" is the QLabel"**/
	QString whoamiCom = "/usr/bin/whoami"; //i also tried with just "whoami"
	QProcess *userproc = new QProcess(this);
	userproc->start(whoamiCom);

	user->setText(userproc->readAllStandardOutput());
        /**I also tried using this method:
          QByteArray result = userproc->readAll();
	user->setText(result); **/

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in anyway the program compiles and runs but nothing is parsed on "user" Label.

Please help, thx