Ar_mailer intermittent SystemStackError

Hello! I am really hoping someone can help me figure this out. I am
hitting this intermittent error. It doesn’t always happen when I am
doing a delivery action, but it happens sometimes. Its not always
against the same action (contactEmail) below, but I’ve seen it
sporadically across 3 other mailing actions. It’s tough to reproduce,
but is definitely causing me some big problems!

Because the stack level is too deep, I feel like I’m not able to see
the entire error. If you can offer any ideas or insight, I would
greatly appreciate it!!

Rails 2.1.0
ar_mailer 1.3.1


SystemStackError (stack level too deep):
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/
attribute_methods.rb:64:in generated_methods?' /usr/lib64/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/ attribute_methods.rb:237:inmethod_missing’
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/
attribute_methods.rb:245:in method_missing' /usr/lib64/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/ transactions.rb:116:inrollback_active_record_state!’
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/
transactions.rb:106:in save' /usr/lib64/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/ base.rb:640:increate’
/usr/lib64/ruby/gems/1.8/gems/ar_mailer-1.3.1/lib/action_mailer/
ar_mailer.rb:92:in perform_delivery_activerecord' /usr/lib64/ruby/gems/1.8/gems/ar_mailer-1.3.1/lib/action_mailer/ ar_mailer.rb:91:ineach’
/usr/lib64/ruby/gems/1.8/gems/ar_mailer-1.3.1/lib/action_mailer/
ar_mailer.rb:91:in perform_delivery_activerecord' /usr/lib64/ruby/gems/1.8/gems/actionmailer-2.1.0/lib/action_mailer/ base.rb:508:insend
/usr/lib64/ruby/gems/1.8/gems/actionmailer-2.1.0/lib/action_mailer/
base.rb:508:in deliver!' /usr/lib64/ruby/gems/1.8/gems/actionmailer-2.1.0/lib/action_mailer/ base.rb:383:inmethod_missing’
/app/controllers/main_controller.rb:433:in `contactEmail’

LAB