Observations of a Staff Engineer in platform (Linux & AWS; formerly Windows and NetWare in hardware). This started as an academic blog and just kept going. Currently private sector and genderqueer. Not an official blog by any stretch. Really.
It would seem that the combination of the NWLIB6a patch and NW6.5 make VNCSRV have a memory leak. Fortunately, there is a fix at the VNC Forge Site. VNCSRV is not supposed to take up 564 megs of memory.