
The Dolphin Viewer (3627) has been updated to use Display Names and fix several general SL problems. The version number did not change. However, in Help -> About the version date did change, Nov 21 2010 13:50:52 (Dolphin Viewer).
Also a problem encountered when using the viewer on OpenSim has been fixed. Several viewers would crash when double clicking a texture while on OpenSim. The problem was also found in several other viewers including the SLV2.
In some viewers there has been a problem with the viewer crashing if you turn your avie in a 360 degree turn, spinning in place. Swinging the viewer to see new areas can cause crashes. Dolphin does NOT have that problem.
The release announcement is here: Dolphin Viewer 1.5.37.3627 and includes link to downloads.

