When I want to install a program I get the following error: "The source file is corrupted. Please obtain a new copy of the program.. I have downloaded the program several times, even from different servers, but that doesn't solve the problem. How can I solve this problem?

An error telling you that files you downloaded are corrupted usually indicates the connection to the server was lost while you were downloading. This will cause your file to be downloaded only partially, even though the browser might think the file is downloaded completely (because it stopped receiving data). When you try to download the file again, the browser will recognize the filename and retrieves the file from it's cache instead of downloading it. Because of that the error keeps coming back, even if you try to download the file from a different server.

To solve this problem you need to clear the cache of your browser and then retry downloading the file. Clearing the cache of your browser will force the browser to download the file from the Internet again instead of taking the corrupt version from the cache on the hard disk.