[subBlue]

Just to clarify a little further (I work with Paratiger above):

Often when doing a graceful restart the server load shoots up to 40-50 and we then start getting lots MySQL of errors such as described above plus others about too many connections to the MySQL database. We have about 25 vhosts on the server. The rails apps aren't set to start on restart and this issue has only started happening since we added a couple of Rails 2.3.2 sites (all the others are rails 2.0.5). The normal running load for the server is about 0.5 We are using LS Ent 4.0.9 on an 8GB 64bit CentOS 5.2 box.

It almost seems that if a request for a site comes in during a server restart then the app tries to serve that request before it is properly loaded and ready. Some of the errors we are getting are from missing methods added by plugins that are perfectly valid once the app is properly initialised.

Running the Rails 2.3.2 sites using locally with an Apache mongrel or passenger setup causes no problems. Apart from the version of Rails these sites are very similar to all the other Rails sites we've been hosting for years with LS.

Finally, restarting LS early in the morning when there is no activity on the site works fine without any errors.

Could there still be some problems with the LS RailsRunner.rb?

Unfortunately this is the first significant issue we have had using LS in almost 3 years of hosting Rails sites and if we can't resolve it very soon we're going to be forced to move to Apache/Passenger