I loaded windows on a separate drive yesterday and ever since my time machine has been backing up around 1.2 GB every time. I had to leave my computer on while I was on campus today and 5 or 6 backups in a row were for ~1.2 GB. I noticed just now that it started at about 36 MB which made sense but then shot up to 1.2 GB. What could be going on here? Has anyone had a similar experience?