vncviewer close window bug on third password attempt

[Keith Hall]

Bug in (at least) TightVNC 1.2.8, probably in earlier versions and maybe
RealVNC too :

If you enter an incorrect password twice in a row, then correctly on the
third (final) attempt, the viewer window comes up and then disappears
immediately, leaving a rogue vncviewer.exe task running that you have to
kill from Task Manager.

Sometimes I have noticed that vncviewer in this state also interferes with
SETUP.EXE (from installshield I think), meaning that until you kill off the
rogue vncviewer process, any installation based on this (Setup.exe running
under WOWExec) simply never starts, or takes forever... I have seen this
many times on many workstations, and is very obscure!

Regards,

Keith.