I have a Ruby on Rails application running on Windows/IIS that every once in a while crashes. When I log on to with
Windows box again, I get Microsoft's Data Execution Prevention (DEP) dialog telling me it had to close the Ruby interpreter.
I haven't been able to reproduce it reliably, but below is some info that might be helpful.

Ruby Version: ruby 1.8.2 (2004-12-25) [i386-mswin32]
Rails Version per Gem: 1.1.0

The stack trace reported from Rails on the most recent crash:
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record/connection_adapters/mysql_adapter.rb:293:in
`columns'
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record/base.rb:696:in `columns'
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record/calculations.rb:212:in `column_for'
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record/calculations.rb:135:in `calculate'
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record/calculations.rb:64:in `count'
#{RAILS_ROOT}/app/controllers/datafile_controller.rb:96:in `getstats'
#{RAILS_ROOT}/app/controllers/datafile_controller.rb:94:in `each'
#{RAILS_ROOT}/app/controllers/datafile_controller.rb:94:in `getstats'
#{RAILS_ROOT}/app/controllers/datafile_controller.rb:13:in `search'

Date: 2008-04-07 16:10
Sender: Luis Lavena

Two things: move to a newer ruby installation (1.8.4 at least)
and install the latest mysql gem adapter.

DEP shouldn't crash on you even is enabled, that means something
nasty was done by some of the components, which I think is mysql.

Date: 2007-06-12 03:06
Sender: Ryan Davis

I'm not convinced this has anything to do with ruby.

Date: 2007-05-03 03:26
Sender: Roger Pack

seems to be a mysql problem -- try updating everything and try
again?