Should I install ruby 1.9?

I've updated rails to 2.3.2, should I update ruby to 1.9?

What are the advantages/disadvantages in doing so?

Ruby 1.9 is the new kid on the block. It's where the future of ruby is headed and at a basic level is faster than ruby 1.8.x. Not everything is ready for it yet though (while rails is, your code or gems that you use may not be ready yet).

Fred