Wouldn't call that random, it just proves you're just overlapping as many Windows & OS X versions to virtualize.
I have OS/2 Warp 4, eComStation, Lubuntu 14.04, Xubuntu 14.04, Haiku, BeOS 5 Personal Edition & ReactOS
On a related note, actually run a Shoutcast station with a spare machine via BeOS 5 as it has rock solid uptime like OS/2