Both v1.28 and 1.34 do not securely overwrite any files. I check one, check all, highlight one, no matter what, when I click yes it says it Operation Complete: Overwritten 0 files in 0.00x seconds. I run Vista x64, and my drive is partitioned into 2 parts. This used to work on an unknown version in XP x64, same computer, but the drive wasn't partitioned back then.