I have been testing various VNC Viewers with Vine Server 3.0 (including Chicken of the Sea, RealVNC viewer, Vine viewer and Tight VNCviewer).
Vine Viewer works just fine but I find it to be one of the slowest viewers out there over a broadband link. (This is too bad since I really would like to cut and paste files to a Vine Server which is only possible with Vine Viewer).
In my experience, one of the fastest viewers (used with Vine Server) is the Free Java viewer from TightVNC. (You must launch the viewer from the command line so it is not the most user friendly for Mac users).
I suspect that one of the main reasons for the speed of the TightVNC viewer is its support for the Tight encoding. Over typical cable broadband connections, I have found that Tight encoding followed by Zlib encoding provide the fastest response times. (It is my understanding that Tight is just an enhanced version of Zib).
Please consider adding support for “Tight” encoding into the next release of Vine Viewer. “Tight” encoding is just awesome for VNC.