I have Ubuntu 11.04 installed in my laptop and tried to upgrade it by opening the update manager and and making the necessary settings in settings - updates - release upgrade - normal releases and then hitting the check button. But nothing appeared indicating later version is available to be upgraded. When I run the following
sudo apt-get dist-upgrade
below is the result that appeared.
Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Also I am unable to watch YouTube videos in the Firefox 15.0 in my Ubuntu 11.04.