Mantis#2017. Thank you kindly, Tyre, for a patch that solves:

Check the client dialog box (from top menu) WORLD / REGION ESTATE 
/ REGION tab. The client dialog box seems to have a hard limit of 
about 32 characters per line available for displaying the region 
version number. Our regions are sending a string which is greater 
than the limit, causing the client to wrap the text and look ugly.

1 files changed, 1 insertions, 1 deletions

diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index 5e1ad71..74502b8 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -98,7 +98,7 @@ namespace OpenSim.Region.Environment.Scenes
         private int m_incrementsof15seconds = 0;
         private volatile bool m_backingup = false;
 
-        protected string m_simulatorVersion = "unknown";
+        protected string m_simulatorVersion = "OpenSimulator Server";
 
         protected ModuleLoader m_moduleLoader;
         protected StorageManager m_storageManager;