Strange behavior with Qt4 development kit

When I run (qtcreator, qtdesigner ...), the widgets mostly blank, if I moved the cursor around them, it clears the blank and show the widgets inside it, moving the mouse again make the widgets blanked again. I resolved this problem before by recompiling qt4-gui and its dependencies but now even with recompiling, the problem didn't resolved.
 
If you're using KDE and nvidia, try switching the rendering backend to xrender [very slow here, but workarounds a similar glitch in area51's QComboboxes].
 
No, I am using Gnome2 with radeon driver, I am getting this behavior only with some application that depends on Qt4, some of theme work with any issues.
 
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