Forgot to mention: found one questionable file (possibly slightly corrupt). It was a driver CD image. Moved that one to 'questionable'.

One BCM/IPMI firmware was repacked and a few third-party source files were loose, so I repacked them into RAR files.

There actually was one official BMC/IPMI .zip file that was packed a little over a week before the known good checksum one, so it was moved to 'old'. The files themselves matched the ones in the known good one, too.