Admin says no to Ruby on Rails

I need some info for an admin who is unwilling to support Ruby on Rails
because he says it "uses a container that has to be bounced which can
cause problems with the server."

The admin also says he has been reading and claims Rails is causing
problems for many companies.

I need to convince this admin that Rails is worth supporting.

I also need some info to convince this admin Rails is not more of a
security risk than say hosting PHP applications.

I need some info for an admin who is unwilling to support Ruby on Rails
because he says it "uses a container that has to be bounced which can
cause problems with the server."

Has to be bounced ? we never restart our mongrels except for upgrades

The admin also says he has been reading and claims Rails is causing
problems for many companies.

Rails and shared hosting don't get along that well, but other than that I wouldn't worry too much

I need to convince this admin that Rails is worth supporting.

I also need some info to convince this admin Rails is not more of a
security risk than say hosting PHP applications.

You can write an insecure application in any language/framework. Comparing rails to php is a bit odd, one being a language and the other a framework. It is true though that rails tries hard to encourage secure behaviour by default (eg if ou use the default AR stuff you should be safe from sql injection)

Fred