Strange -- I've recently partitioned 65Gb on a 256 SSD for Win7 bootcamp install. I've been configuring the Win7 install, and my used space jumped from ~20gb to ~40gb and I don't know why. I've looked in the trash, shown hidden folders, and rebooted multiple times but no luck. My Windows folder is ~17Gb, and all other folders (5 visible and 2 hidden) maybe add-up to 3-4Gb, yet Windows tells me 45Gb are in use. Has anyone seen a similair issue?