I have had some difficulty making the middle button work correctly
in x-terminal and dtterm windows - it either pastes multiple times
or scrolls erratically.

The selections I have tried during configuration are:
 a) Logitech Mouse (MS compatible) with chord-middle, no emulate-3, and
 b) Microsoft Mouse                with chord-middle, no emulate-3

Has anybody got an animal like this to work properly?  I am using NetBSD 1.4.1

G.