KDE起动后出现如下错误？[已解决］

wai3886

我的FC4  KDE起动后总是出现如下两条错误提示
1.  The Composite Manager crashed twice within a minute and is therefore disabled for this session


2. Composite extension not found
You must use XOrg ≥ 6.8 for translucency and shadows to work.
Additionally, you need to add a new section to your X config file:
Section "Extensions"
Option "Composite" "Enable"
EndSection
我的xorg6.8.2已经装了，应该是没有启动？难道我的FC4用的还是XFree86？不知该如何修改解决这两个问题。请大虾们帮忙看看~或给个URL让小菜我参考。谢谢！