Xvnc doesn't detect idle mouse and keyboard

First, I noticed that Pidgin wouldn't mark me as "away" after being away from my computer. Then, I noticed Gnotime also wouldn't stop the clock and xautolock wouldn't start the lock screen. So, after doing some research, I discovered that the X windows server I'm running might be at fault, namely, Xvnc a.k.a. Xtightvnc . The output of doing an xdpyinfo is below.

There is no MIT-SCREEN-SAVER, which I think would be necessary for idleness of the mouse and keyboard to be correctly acknowledged.

Don't know if anything can be done about this since it's dependent upon a fork from XFree86.

------------------------ xdpyinfo output --------------------------

number of extensions: 7
    BIG-REQUESTS
    MIT-SHM
    MIT-SUNDRY-NONSTANDARD
    SHAPE
    SYNC
    XC-MISC
    XTEST

-------------------------------------------------------------------------------

$ lsb_release -rd
Description: Ubuntu 9.10
Release: 9.10
$ apt-cache policy tightvncserver
tightvncserver:
  Installed: 1.3.9-4
  Candidate: 1.3.9-4
  Version table:
 *** 1.3.9-4 0
        500 http://us.archive.ubuntu.com karmic/universe Packages
        100 /var/lib/dpkg/status
$ apt-cache policy xrdp
xrdp:
  Installed: 0.4.1~dfsg-2
  Candidate: 0.4.1~dfsg-2
  Version table:
 *** 0.4.1~dfsg-2 0
        500 http://us.archive.ubuntu.com karmic/universe Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
Architecture: i386
Date: Sat Sep 25 07:09:17 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: tightvncserver 1.3.9-4
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-22.65-generic
SourcePackage: tightvnc
Uname: Linux 2.6.31-22-generic i686