Has RIAA expert Jacobson contradicted himself?

NewYorkCountryLawyer writes: "A year and five months after examining the defendant's hard drive in UMG v. Lindor, the RIAA's "expert" witness, Dr. Doug Jacobson, has issued a "supplemental report" which appears to contradict his earlier "reports" alluding to the hard drive inspection. In view of the superb job the Slashdot community and the Groklaw community did in helping first to prepare for, and then to vet, Jacobson's deposition, I humbly submit for your learned review the now three (3) versions of the "expert's" opinions based on the hard drive, for your analysis. As with almost all federal litigation documents nowadays, they are, unfortunately, in *pdf format: (a) December 19, 2006, declaration; (b) unsigned October 25, 2006, report, awaiting approval from RIAA lawyers; and (c) December 15, 2007, version. The initial observations of commentators on my blog are located here."