I can confirm another instance of file corruption with Linux guests, sharing folders with a Mac OS X host running Fusion 6.0.2. I'm the co-author of Scalpel, a file carving tool, and in some recent tests before releasing a new version, we encountered situations where files written to a shared folder on the Mac OS X host from a Linux guest clearly don't match what's written when the output directories are either in inside the Linux guest, on bare hardware, or inside a Windows guest. For now, we're simply not going to use shared folders with Linux guests, but this is a huge problem that needs to be addressed quickly, because a lot of people in the digital forensics and security arena used shared folders and assume they work. For what it's worth, the corruption is infrequent. As an example, in one test, a dozen or so files were corrupted out of ~16,000.
Thanks
--Golden