I have an eMac and get the "colored spinning ball" (not sure of technical term) each time I open my account. I can't see or open anything on my desktop, open Finder or log out of my account (without shutting computer off). Tried creating a new account but same thing happened as well as to my son's & daughter's accounts. Apple's 800 # wouldn't help without charging lots of $ - has anyone had this happen - any suggestions to fix?