Whenever I try to install anything, my system gets midway through the install, then all of a sudden, my CPU usage is pegged at 100 percent and the installation hangs and does nothing. What's up, this is realy frustrating.
Maybe your hard disk. Do you get problems like this when copying/saving files?
Another cause yould be a problem with a specific installer type (eg. MSI Installer). Update it (MSI Installer 3.0) if the programs you are trying to install use MSI.