Short story - if my MacBook was sitting mostly idle (i.e. some light web browsing or email activity) the hourly Time Machine backups would usually be ~55-60MB. At some point in the recent past, those backups have increased to ~500MB. Is there a way to tell which files are being backed up, so I might eliminate whatever has caused such a huge increase in backup size? I really can't recall installing any new software which might be responsible. Thanks in advance.