0) yes
1) open-vm-tools (vmware-user)
2) does not run, gets an assertion.
3)
Locking assertion failure.  Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb7a75767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb7a758b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xb7e0929d]
#3 /usr/lib/vmware-tools/bin32/vmware-user [0x80521ba]
#4 /usr/lib/vmware-tools/bin32/vmware-user [0x804f2e0]
#5 /usr/lib/vmware-tools/bin32/vmware-user [0x804f81d]
#6 /usr/lib/vmware-tools/bin32/vmware-user [0x804bbd3]
#7 /usr/lib/vmware-tools/bin32/vmware-user [0x806d8c8]
#8 /usr/lib/vmware-tools/bin32/vmware-user [0x8057225]
#9 /usr/lib/vmware-tools/bin32/vmware-user [0x804b9fd]
#10 /usr/lib/libglib-1.2.so.0 [0xb7d975a3]
#11 /usr/lib/libglib-1.2.so.0 [0xb7d97bfd]
#12 /usr/lib/libglib-1.2.so.0 [0xb7d9845f]
#13 /usr/lib/libglib-1.2.so.0(g_main_run+0x3f) [0xb7d985df]
#14 /usr/lib/libgtk-1.2.so.0(gtk_main+0xbf) [0xb7ca4e0f]
#15 /usr/lib/vmware-tools/bin32/vmware-user [0x804c400]
#16 /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0) [0xb7a8e450]
#17 /usr/lib/vmware-tools/bin32/vmware-user [0x804b7c1]
Locking assertion failure.  Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb7a75767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0xb7a7581e]
#2 /usr/lib/libX11.so.6 [0xb7e085f8]
#3 /usr/lib/libX11.so.6(XQueryExtension+0x26) [0xb7df70c6]
#4 /usr/lib/libX11.so.6(XInitExtension+0x3b) [0xb7debe2b]
#5 /usr/lib/libXext.so.6(XextAddDisplay+0x53) [0xb7dbc443]
#6 /usr/lib/vmware-tools/bin32/vmware-user [0x80743a9]
#7 /usr/lib/vmware-tools/bin32/vmware-user(XPanoramiXQueryVersion+0x14) [0x807441c]
#8 /usr/lib/vmware-tools/bin32/vmware-user [0x80748ab]
#9 /usr/lib/vmware-tools/bin32/vmware-user [0x804f0c5]
#10 /usr/lib/vmware-tools/bin32/vmware-user [0x804f81d]
#11 /usr/lib/vmware-tools/bin32/vmware-user [0x804bbd3]
#12 /usr/lib/vmware-tools/bin32/vmware-user [0x806d8c8]
#13 /usr/lib/vmware-tools/bin32/vmware-user [0x8057225]
#14 /usr/lib/vmware-tools/bin32/vmware-user [0x804b9fd]
#15 /usr/lib/libglib-1.2.so.0 [0xb7d975a3]
#16 /usr/lib/libglib-1.2.so.0 [0xb7d97bfd]
#17 /usr/lib/libglib-1.2.so.0 [0xb7d9845f]
#18 /usr/lib/libglib-1.2.so.0(g_main_run+0x3f) [0xb7d985df]
#19 /usr/lib/libgtk-1.2.so.0(gtk_main+0xbf) [0xb7ca4e0f]

4)
dpkg -l libxcb-xlib0 libx11-6 libxext6 open-vm-tools-gui libglib1.2ldbl libgtk1.2
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name                                   Version                                Description
+++-======================================-======================================-============================================================================================
ii  libglib1.2ldbl                         1.2.10-19build1                        The GLib library of C routines
ii  libgtk1.2                              1.2.10-18.1build2                      The GIMP Toolkit set of widgets for X
ii  libx11-6                               2:1.1.3-1ubuntu1                       X11 client-side library
ii  libxcb-xlib0                           1.1-1                                  X C Binding, Xlib/XCB interface library
ii  libxext6                               2:1.0.3-2build1                        X11 miscellaneous extension library
ii  open-vm-tools-gui                      2007.11.21-64693-0ubuntu1              VMWare guest tools

5) yes, the program works perfectly with LIBXCB_ALLOW_SLOPPY_LOCK