My sister's Mac again! She has had 2 popups from Google (Not Apple) to say her computer is slow and she needs to update it otherwise damage to the computer will occur?. There is a link with the popup to do so. To me that is very strange and I have advised her not to click on the link because how would Google be able to update the computer? Her internet ISP speed is not that fast in the area she is in though so that maybe a factor? Any thoughts her thanks.