The PMD benchmark fails under Jato:
$ jato -jar dacapo-2006-10-MR2.jar pmd
[snip]
Digest validation failed for stdout.log, expecting 0x15443d38fce80cd97026c5ca650fe3dae0a30e01 found 0x41d3599f62204597fd2a4ef061249c601cabc949
===== DaCapo pmd FAILED =====
Validation FAILED for pmd default
but works fine under JamVM.