This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
But I mentioned clearly the problem. Here it is again,
When I select Applications > Add/Remove Software, I always get the following error,
Unable to retrieve software information and this message appears in the form of a pop up box and when I click Ok in the pop up box, I'm back to my desktop again. Please any Linux gurus, help e get rid of this problem!
You mention that you screwed up yum in a previous post. You have so many posts going now I can't tell what you are doing. We ask that you Use One Thread Per Question to keep confusion to a minimum. As for solving your problem, consider searching and posting at a Fedora-specific forum, like Fedora Forum. There will be a far greater level of experience with Fedora there than here, a Java website with a Linux forum. One other thing you should consider is using a Linux distribution that is more friendly to non-free media. I use Ubuntu and the latest version (7.04) is very easy to configure to play non-free formats. The great thing about Linux is the freedom to choose. Choosing a distribution that doesn't match your requirements is just asking for trouble.