Windows logo key (Windows keyboard key) does not work

In Stellarium 0.11.3 Windows logo key (Windows keyboard key) does not work, so I could not switch to Windows and other programs. When that key is pressed Stellarium 0.11.3 hangs for a short time. Even it is difficult to switch to Windows using task manager (pressing Ctrl+Alt+Del many times).

NB: In control panel ( Device manager and system information) I see:
1) ATI Radeon HD 4550 graphic card (working properly)(in addition to mobile intel 4 series Chipset Family), but it is not mentioned in Stellarium log file?
2) Installed memory: 3.00 Go and in the log file 2 Go?

Log.txt:
2012-06-17T12:31:51
Windows 7
Compiled with GCC 4.4.0
Qt runtime version: 4.7.4
Qt compilation version: 4.7.4
Addressing mode: 32-bit
Total memory: 2047 MB (unreliable)
Total virtual memory: 2047 MB (unreliable)
Physical memory in use: 53%
Processor speed: 1296 MHz
Processor name: Genuine Intel(R) CPU U7300 @ 1.30GHz
Processor speed: 1296 MHz
Processor name: Genuine Intel(R) CPU U7300 @ 1.30GHz
C:\Program Files\Stellarium\stellarium.exe
 -------------------------------------------------------
[ This is Stellarium 0.11.3 - http://www.stellarium.org ]
[ Copyright (C) 2000-2012 Fabien Chereau et al ]
 -------------------------------------------------------
Writing log file to: "C:/Users/AT/AppData/Roaming/Stellarium/log.txt"
File search paths:
  0 . "C:\Users\AT\AppData\Roaming\Stellarium"
  1 . "."
Config file is: "C:\Users\AT\AppData\Roaming\Stellarium/config.ini"
OpenGL supported version: "2.1.9117 FireGL"
Qt GL paint engine is: "OpenGL2"
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
Cache directory is: "C:\Users\AT\AppData\Local\stellarium\stellarium\cache"
Sky language is "fr"
Application language is "fr"
Loading Solar System data ...
Loaded 69 / 69 planet orbits from "C:\Users\AT\AppData\Roaming\Stellarium/data/ssystem.ini"
Loading star data ...
"Loading "./stars/default/stars_0_0v0_1.cat": 0_0v0_1; 5013"
"Loading "./stars/default/stars_1_0v0_1.cat": 1_0v0_1; 21999"
"Loading "./stars/default/stars_2_0v0_1.cat": 2_0v0_1; 151416"
"Loading "./stars/default/stars_3_1v0_0.cat": 3_1v0_0; 434064"
Finished loading star catalogue data, max_geodesic_level: 3
navigation/preset_sky_time is a double - treating as jday: 2.45151e+06
Loaded 10051 NGC records
Loading NGC name data ...
Loaded 223 / 223 NGC name records successfully
Loading star names from "./skycultures/western/star_names.fab"
Loaded 230 / 230 common star names
Loading star names from "./stars/default/name.fab"
Loaded 3215 / 4359 scientific star names
Loaded 88 / 88 constellation records successfully for culture "western"
Loaded 85 / 85 constellation art records successfully for culture "western"
Loaded 89 / 89 constellation names
Loading constellation boundary data ...
Loaded 782 constellation boundary segments
Creating GUI ...
Loaded plugin "Oculars" .
Ocular plugin - press Command-O to toggle eyepiece view mode. Press ALT-o for configuration.
Oculars::validateIniFile ocular.ini exists at: "C:\Users\AT\AppData\Roaming\Stellarium/modules/Oculars/ocular.ini" . Checking version...
Oculars::validateIniFile found existing ini file version 2
Loaded plugin "Satellites" .
Satellites::getJsonFileVersion() version from file: "0.7.1"
Satellites::init using satellite.json file: "C:\Users\AT\AppData\Roaming\Stellarium/modules/Satellites/satellites.json"
Satellite has invalid orbit: "METEOR 1-1"
Satellite has invalid orbit: "H-2A R/B"
Satellite has invalid orbit: "RADIOSCAF-B"
Loaded plugin "SolarSystemEditor" .
Using the ssystem.ini file that already exists in the user directory...
Loaded plugin "TimeZoneConfiguration" .
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
Unloaded plugin "TimeZoneConfiguration" .
Unloaded plugin "SolarSystemEditor" .
Unloaded plugin "Satellites" .
Unloaded plugin "Oculars" .
Downloaded 0 files (0 kbytes) in a session of 53.715 sec (average of 0 kB/s + 0 files from cache (0 kB)).