Dropbox is using 605 GB of disc space in (user)/Library/Cloud Storage/Dropbox
My M2 MacBk Air, running Sequoia 15.7.7 had been running around 700 GB disc usage on its 1 TB HD. Recently is suddenly started giving me "Disc almost full" warnings. It's at 895 GB of 995 available and my "System Data" is a colossal 675 GB! (should be around 50 GB normally). After some hard searching, I found at:…