Copying games to PS3 hard drive ??

Not talking about the illegal dumping of ISO's to the hard drive that you can do but while looking for some info on sorting the pro evo nightmare out i came apon this statement from Konami

"Konami also admits, "We have uncovered issues which affect [the] online gameplay quality of PES 2008. We are working at full strength to find a solution as quickly as possible. We sincerely apologise for this inconvenience." Other issues included the PS3 freezing when playing in Master League mode, and freezing when a match is started. Konami says these problems can be bypassed by deactivating the autosave function, and not installing the game on the hard disc."

It didnt go into any more detail on it and all i can find online is dumping info can anyone shed any light on this as its ment to speed up loading times ?