Recently been getting corrupt/not matching files when installing applications, especially games. The installer gives an error and asks if I want to abort, ignore or continue. Of course I've tried now with three different optical drives, a new hard drive and varying power configurations. It's really starting to hack me off as I've bought 2gb RAM recently to play Oblivion, BF2 etc but none of them are installing (When they would before). Any ideas on this one? Help much appreciated.