ruby-1.9.1-p129 has released. i386 and x64 binaries are available.
These contains security fix so I recommend to upgrade.
And, ruby-1.8.7-p160 and ruby-1.8.6-p368 have also released.
Sorry for late of preparation of the binaries of them.
These contains security fix, too. Of course, I recommend to upgrade.
You can get all binaries from "Release".