ubuntu 9.10下linux qq 自动退出的问题

升级到ubuntu 2009以后， linux
qq经常会自动退出，不清楚什么问题,导致我用了一段时间的web qq昨天发现是可以处理的，修改/usr/bin/qq，添加一个环境变量
export GDK_NATIVE_WINDOWS=true修改后：
#cat /usr/bin/qq
#!/bin/sh
export GDK_NATIVE_WINDOWS=true
cd /usr/share/tencent/qq/
./qq附：GDK_NATIVE_WINDOWS是什么意思？GDK has been rewritten to use 'client-side windows'. This means that GDK
maintains its own window hierarchy and only uses X windows where it is
necessary or explicitly requested. Some of the benefits of this change are* Reduced flicker
* The ability to do transformed and animated rendering of widgets
* Easier embedding of GTK+ widgets, e.g. into Clutter scene graphsLaunching an app with GDK_NATIVE_WINDOWS=1 application turns off this
feature. This is needed if the application manipulates the windows it
creates using direct X API calls or a mixture of X API and GDK instead of
just going through GDK. When using "client-side windows" all window
manipulation by an application must go through GDK. Adobe needs to update
Acroread to be compatible with this feature.