Bug#610454: vino-server start eating 100% cpu just when disabling Remote Desktop checkbox in vino-preferences

[pcost]

Package: vino
Version: 2.28.2-2
Severity: important

Open vino-preferences and select 'allow other user to view your desktop'. Now deselecting this checkbox causes
a 100% cpu usage, by vino-server process.
This behavior happens to all my three machines (686).
Here are the first lines from 'top':

top - 19:00:44 up 27 min,  4 users,  load average: 1.16, 1.10, 0.90
Tasks: 148 total,   2 running, 146 sleeping,   0 stopped,   0 zombie
Cpu(s): 98.3%us,  1.7%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   2065072k total,   564268k used,  1500804k free,    44732k buffers
Swap:  1855480k total,        0k used,  1855480k free,   337892k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                         
 2337 paolo     20   0 19924 7284 6064 R 98.0  0.4  22:40.98 vino-server                                                     
 1372 root      20   0 43152  15m 7652 S  1.0  0.8   0:23.29 Xorg                                                            


-- System Information:
Debian Release: 6.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages vino depends on:
ii  gconf2                  2.28.1-6         GNOME configuration database syste
ii  libavahi-client3        0.6.27-2         Avahi client library
ii  libavahi-common3        0.6.27-2         Avahi common library
ii  libavahi-glib1          0.6.27-2         Avahi glib integration library
ii  libc6                   2.11.2-7         Embedded GNU C Library: Shared lib
ii  libdbus-1-3             1.2.24-4         simple interprocess messaging syst
ii  libdbus-glib-1-2        0.88-2.1         simple interprocess messaging syst
ii  libgconf2-4             2.28.1-6         GNOME configuration database syste
ii  libgcrypt11             1.4.5-2          LGPL Crypto library - runtime libr
ii  libglib2.0-0            2.24.2-1         The GLib library of C routines
ii  libgnome-keyring0       2.30.1-1         GNOME keyring services library
ii  libgnutls26             2.8.6-1          the GNU TLS library - runtime libr
ii  libgtk2.0-0             2.20.1-2         The GTK+ graphical user interface 
ii  libice6                 2:1.0.6-2        X11 Inter-Client Exchange library
ii  libjpeg62               6b1-1            The Independent JPEG Group's JPEG 
ii  libnotify1 [libnotify1- 0.5.0-2          sends desktop notifications to a n
ii  libpango1.0-0           1.28.3-1         Layout and rendering of internatio
ii  libsm6                  2:1.1.1-1        X11 Session Management library
ii  libsoup2.4-1            2.30.2-1         an HTTP library implementation in 
ii  libtelepathy-glib0      0.11.11-1        Telepathy framework - GLib library
ii  libunique-1.0-0         1.1.6-1.1        Library for writing single instanc
ii  libx11-6                2:1.3.3-4        X11 client-side library
ii  libxdamage1             1:1.1.3-1        X11 damaged region extension libra
ii  libxext6                2:1.1.2-1        X11 miscellaneous extension librar
ii  libxfixes3              1:4.0.5-1        X11 miscellaneous 'fixes' extensio
ii  libxtst6                2:1.1.0-3        X11 Testing -- Record extension li
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

Versions of packages vino recommends:
ii  gvfs                          1.6.4-3    userspace virtual filesystem - ser

Versions of packages vino suggests:
ii  gnome-user-guide [gnome2-user 2.30.1-1   GNOME user's guide
pn  vinagre                       <none>     (no description available)

-- no debconf information