500 error and tmp folder

Hi All,

I am periodically getting 500 errors from Mongrel when my app runs in
production mode. This corresponds to a repeated series of entries in
the log
file that looks like this:

Permission denied - /tmp/ruby_sess.3d7c40b881a0124b
/usr/lib64/ruby/1.8/pstore.rb:289:in initialize' /usr/lib64/ruby/1.8/pstore.rb:289:intransaction’
/usr/lib64/ruby/1.8/cgi/session/pstore.rb:71:in initialize' /usr/lib64/ruby/1.8/cgi/session.rb:273:ininitialize’
/usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/cgi_process.rb:112:in
session' /usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/cgi_process.rb:142:instale_session_check!’
/usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/cgi_process.rb:108:in
session' /usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:918:inassign_shortcuts_without_flash’
/usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/flash.rb:141:in
assign_shortcuts' /usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:402:inprocess_without_filters’
/usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/filters.rb:377:in
process_without_session_management_support' /usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/session_management.rb:117:inprocess’
/usr/lib64/ruby/gems/1.8/gems/rails-1.1.6/lib/dispatcher.rb:38:in
dispatch' /usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/rails.rb:84:inprocess’
/usr/lib64/ruby/1.8/sync.rb:229:in synchronize' /usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/rails.rb:83:inprocess’
/usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:580:in
process_client' /usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:579:inprocess_client’
/usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:686:in
run' /usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:686:inrun’
/usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:673:in
run' /usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/configurator.rb:267:inrun’
/usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/configurator.rb:266:in
run' /usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/bin/mongrel_rails:127:inrun’
/usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/command.rb:211:in
`run’
/usr/lib64/ruby/gems/1.8/gems/mongrel-0.3.13.4/bin/mongrel_rails:231
/usr/bin/mongrel_rails:18

After a few minutes, I stop getting the error. Does anyone know what
could be
causing this?

Thanks!
Daniel