"andrewhavens (Andrew Havens)" <email / andrewhavens.com> wrote:
> Feature #6844: Random.rand() requires pre-seeding in forked process
> https://bugs.ruby-lang.org/issues/6844
> 
> Author: andrewhavens (Andrew Havens)
> Status: Open
> Priority: Normal
> Assignee: 
> Category: 
> Target version: 

Which version of Ruby are you experiencing this with?
It should be fixed in the latest 1.9.3 and 1.8.7 releases