memory problem: how to clean downloaded images

[oruccim]

hi,
i am developing an nokia qt app. but the biggest problem is the memory full error on symbian devices (n8 and 5800 ) so i am try to download my pic. from their url and then displaying my code as bellow

item::item(){
QNetworkProxyFactory::setUseSystemConfiguration(true);
QUrl url(imageurl);
QNetworkAccessManager *manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(finished(QNetworkReply*)),
this, SLOT(updateImage(QNetworkReply*)));
manager->get(QNetworkRequest(url));
}

void item::updateImage(QNetworkReply *networkReply){
QImage image;
if (image.loadFromData(networkReply->readAll()))
{ ui->label->setPixmap(QPixmap::fromImage(image));
}

}

this code is running in one time but when this page is called 2nd or 3th time memory problem disappears
i need to clear the images which are downloaded before . is there any way to clean the memory ?
it is really urgent. Thank you..

[mistergod]

i am getting the same problem when showing images with code like yours. Have you found any way to clear the memory?