Hi all, while doing some summer cleaning, I noticed a huge Library folder in my User part, a whooping 85GB one. Considering I have a 256GB SSD, it's taking up quite the space. The "small" stuff is Safari as 1,3GB and Mail with 9GB, what do you think these are? Then I have Caches for 15GB, Group Containers with 17GB, Containers with another 17Gb and Application Support with 25Gb. I know Support contains old iPhone backups - can I move them to another disk and move them back if/when needed? For all the other folders, what do you suggest? Can I delete something or are all these useful? I'm on a 2014 MBA running 10.11, and considering the upgrade to 10.12, hence the summer cleaning. Btw, do you think the update to Sierra would be useful?