xfree impossibly slow with hummingbird socks installed

[Mike Daffey <jmlee at optusnet dot com dot au>]

I'm new to cygwin & xfree and pretty ignorant of Win2K; apologies if
this is so well-known it doesn't  rate a mention.
It's also not a problem for me - I can live without SOCKS most of the
time.
I installed cygwin & xfree from the net on a win2k (service pack 2)
laptop a few days ago. 256MB, 650MHz PIII.  startxwin.sh gets XWin, twm
and xterm running, but amazingly slow. (xsetroot takes 22seconds to
run...)  Only other effect is that menu fonts seem to be invisible -
green fg on green background?

Cygwin performance seems ok. A few experiments strongly suggest that
XWin is being scheduled very briefly once per second and this behaviour
is independent of mouse movement. Another laptop with the same h/w & O/S
is fine.
Considerably later....
Noticed that an unconfigured Hummingbird SOCKS client has a DLL loaded.
Deinstall SOCKS with XWin running and get the interesting message to the
effect that cygwin/xfree should be stopped before proceeding with the
deinstall.
Obey orders, restart XWin; everything fine (including menus).
Reinstalled/deinstalled  SOCKS to verify that this is reproducible.
The SOCKs client is a version 7.10 - (socks_v71_releasd.exe), a free
download from www.hummingbird.com. Dunno whether 7.10 is the latest
version; it's certainly only a few months old.
below are the outputs of xdpyinfo and the XWin log. diff tells me
there's no difference with or without SOCKS.

Mike

xdpyinfo output:
===========
name of display:    127.0.0.1:0.0
version number:    11.0
vendor string:    The XFree86 Project, Inc
vendor release number:    40200000
XFree86 version: 4.2.0
maximum request size:  4194300 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 24, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0x20000e, revert to PointerRoot
number of extensions:    22
    BIG-REQUESTS
    DEC-XTRAP
    DOUBLE-BUFFER
    Extended-Visual-Information
    FontCache
    GLX
    LBX
    MIT-SUNDRY-NONSTANDARD
    RANDR
    RECORD
    RENDER
    SECURITY
    SGI-GLX
    SHAPE
    SYNC
    TOG-CUP
    XC-APPGROUP
    XC-MISC
    XFree86-Bigfont
    XKEYBOARD
    XTEST
    XVideo
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1018x715 pixels (345x242 millimeters)
  resolution:    75x75 dots per inch
  depths (7):    32, 1, 4, 8, 15, 16, 24
  root window id:    0x36
  depth of root window:    32 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x20
  default number of colormap cells:    2048
  preallocated pixels:    black 0, white 16777215
  options:    backing-store NO, save-unders NO
  largest cursor:    1018x715
  current input event mask:    0xd0001d
    KeyPressMask             ButtonPressMask          ButtonReleaseMask
    EnterWindowMask          SubstructureRedirectMask PropertyChangeMask

    ColormapChangeMask
  number of visuals:    2
  default visual id:  0x22
  visual:
    visual id:    0x22
    class:    TrueColor
    depth:    32 planes
    available colormap entries:    2048 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x23
    class:    TrueColor
    depth:    32 planes
    available colormap entries:    2048 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
XWin.log (from just running XWin at the bash prompt)
====================================
winInitializeDefaultScreens () - w 1024 h 768
_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root
winDetectSupportedEngines () - Windows NT/2000
winDetectSupportedEngines () - DirectDraw installed
winDetectSupportedEngines () - Allowing PrimaryDD
winDetectSupportedEngines () - DirectDraw4 installed
winDetectSupportedEngines () - Returning, supported engines 0000001f
winSetEngine () - Using Shadow DirectDraw NonLocking
winAdjustVideoModeShadowDDNL () - Using Windows display depth of 32 bits
per pixel
winAdjustForAutoHide - Original WorkArea: 0 0 740 1024
winAdjustForAutoHide - Adjusted WorkArea: 0 0 740 1024
winCreateBoundingWindowWindowed () - WindowClient w 1018 h 715 r 1018 l
0 b 715 t 0
winCreateBoundingWindowWindowed () -  Returning
winAllocateFBShadowDDNL () - lPitch: 4072
winInitVisualsShadowDDNL () - Masks 00ff0000 0000ff00 000000ff BPRGB 8 d
32
winLayerCreate () - dwDepth 32
winRandRInit ()
winCreateDefColormap () - Deferring to fbCreateDefColormap ()
winScreenInit () - returning
error opening security policy file
/usr/X11R6/lib/X11/xserver/SecurityPolicy
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/,
removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1/,
removing from list!
winWindowProc () - Closekey hit, quitting
winCloseScreenShadowDDNL () - Freeing screen resources