Unnamed window on screen with IceWM

Hello, I am new user of this list.
Excuse me for my use of English language. I am venezuelan and my
native language is Spanish.

Ok. I am writing from a desktop PC with the following software and hardware:

Debian GNU/Linux 7.8 (codename: Wheezy)
Kernel 3.16.0-0.bpo.4-686-pae
IceWM 1.3.7
PCManFM 1.2.3
SLiM 1.3.6

CPU Intel Pentium 4 1.7 GHz
GPU GeForce2 MX/MX 400 NV11 with 64 MB of shared memory
RAM 512 MB
HD 10 GB

My considerations: I like this windows manager. It's fantastic the
fast, very low use of cpu and ram and full gestion of all relative to
behavior windows, practically 100% adaptable to the user preferences.
I believe that I've found the perfect blend software for me...!  :-)
However, the reason for my consultation I write in the following lines.

The graphic environment setting is:

SLiM manage startup reading the .xinitrc file in the user home, with
the command lines:
---------------------------------------------------------------------------------------------------
login_cmd   exec dbus-launch /bin/bash -login ~/.xinitrc %session
sessions            icewm,startxfce4,openbox
---------------------------------------------------------------------------------------------------

The applications that boot automatically, written on the xinitrc file are:
--------------------------------------------------------------------------
unclutter &
numlockx &
xscreensaver --nosplash &
pcmanfm --desktop &
sleep 6 && xcompmgr -cCFf -l2 -t1 -r3 -0.20 -D3 &
sleep 5 && /usr/lib/notify-osd/notify-osd &
sleep 2 && conky -c $HOME/.conkyrc &
sleep 7 && volumeicon &
sleep 3 && icewmtray &
exec ck-launch-session dbus-launch /usr/bin/icewm
-----------------------------------------------------------------------------

As you can see, I use pcmanfm by manage the icons desktop, the
wallpaper and automount of removible media. I no use icewmbg and,
therefore I no use icewm-session.

My problem:
When the PC on, appear a unnamed windows with small dimensions near to
right upper corner of screen, and your button on taskbar from which
can be minimized.

This window can't be closed from the button on windows framework,
neither using the xkill command.
I've tried from htop task manager but not appear recorded.
Only restart the windows manager disapper. If the PC on, with the
unnamed window on screen, is reboot, also disapper it.

I've tried vainly killing the unclutter, numlockx, xscreensaver,
pcmanfm, conky, xconpmgr, notify-osd, volumeicon and icemwtray
applications, sequentially.

 Also try with the command line:

$ ps aux | grep username > ps.out.txt

before and after of session close, but I do not find some line that do
allusion at unnamed window.

I know that isn't severe problem but is bothersome.

I've been reading the icewm-user lists, and several web sites on
internet, but not find solution.

I appreciate the time and patience for read and, if is possible,
provide some idea.

Regards

fdm

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