Strange IRB problem

strange....
I'm on Vista and updated to Rails 2.2.2 and rubygems 1.3.1 with the
usual problem there.
...but fixed that pretty easily ..(it's well documented)...

everything was fine....but then I tried to use IRB.
in every shell I have (netbeans, git bash, windows shell)
I got this result:

What version of Ruby are you running? From the output, it appears that
somebody's commented out several DOS batch commands (@echo and
friends)
with #s in irb.bat.

Does calling irb directly from the command line work?

--Matt Jones