Just wanted to point this out.
Don't know if anyone else is experiencing this.
occasionally, I will accidentally hit control C to escape out of irb  
prompt..
When doing this in 1.9 the next command I type returns ^C
Seems odd..
Any idea why this happens this way?

slog:~/ruby19/bin UniX$ /Users/UniX/ruby19/bin/irb
irb(main):001:0> RUBY_VERSION
=> "1.9.0"
irb(main):002:0> require 'java'
^C
irb(main):002:0> ^C
irb(main):002:0> wtf?
^C
irb(main):002:0>