In the last month or so both my computer at home and at work have taken to spinning the disk an inordinate amount slowing everything down. The only changes I can remember is the 10.4.10 update and the beta Safari which was a mistake. Is this a known issue or is my system giving up on me? I have 1GB of memory but this is used up with just a few application. For example If I open Word, and Safari then Acrobat free memory is reduced to 25MB; if I then quit all application free memory grows to 130MB which is considerably less that the 429MB when newly launched. Yes I have ordered another 1GB of memory but I now wonder if that is the solution. Anyone any idea? Jan