Thanks for the reply,
You are right, 10.4. I have 90 gigs free out of 250. No, i have not downloaded anything recently. Whatever I am using, Skype, Firefox, iphoto,iTunes, etc, stops dead, even Skype freezes the screen. Then the spinning ball comes on, nothing can be done at that point. Then after some time, 30 seconds to 3 minutes, it returns. If watching shows, voice lingers after picture freezes, then stars back up where it left off.If I am able to use the curser, and click a couple other things in frustration, they will eventually pop up when it returns to life.Also Safari, previously my main browser , seems to havehas vanished .