My MacBook, which has never been in the best of health, took sick again on Monday. I turned on the power and ... nothing. I was finally able to start it using a somewhat esoteric protocol, but I really thought I'd be buying a new computer. I've been in need of a good, local computer expert who knows Macs, and it now looks like I found one. Mr. Mac Expert came here yesterday and spent all afternoon doing various checks and repairs and it now looks like it's running smoothly. He'll be returning tomorrow to do one more thing. It appears that I picked up some malware. Several times over the past few days I've seen an ad for "Mac Protector." Mr. Mac Expert said that that's a malware program. I must have inadvertently clicked on it. Mac users, beware.