I installed RC2 on following platforms and did: forrest seed, forrest, forrest 
run.

1) Gentoo Linux 2006.1, Java 1.5, Jetty         --OK
2) Windows Vista Home Premium, Java 1.5, Jetty  --OK

Running 'forrest' command on Vista with Java 1.6 fails; there should be a 
problem with the Jing task in validate-sitemap target.

SinDoc