Anyone see similarly inconsistent code generation errors?

I’m curious to see if anyone else has been experiencing errors such
as the following at unpredictable times (usually after changing
something on a page and then re-loading it in development mode):

ArgumentError (negative argument):
/vendor/rails/actionpack/lib/action_controller/
code_generation.rb:13:in `*’

NoMethodError (undefined method shift' for -517611318:Fixnum): /vendor/rails/actionpack/lib/action_controller/ code_generation.rb:215:incontinue’

NoMethodError (undefined method concat' for -517611318:Fixnum): /vendor/rails/actionpack/lib/action_controller/ code_generation.rb:202:inadd_segment’

TypeError (wrong instance allocation):
/vendor/rails/actionpack/lib/action_controller/
code_generation.rb:65:in `new’

TypeError (-517611318 is not a class/module):
/vendor/rails/actionpack/lib/action_controller/
code_generation.rb:66:in `dup’

These errors happen every once in a while (maybe 1/20 times on
average), and go away if I re-load the page once or twice. I’m
running Edge Rails with Ruby 1.8.3 on Mac OS X 10.4.3. They errors
been happening for two or three weeks so it’s not a bleeding edge
addition to Rails, whatever the cause.

Ideas anyone?

Duane J.
(canadaduane)