Version:            (using KDE 4.2.1)
OS:                Linux
Installed from:    Unspecified Linux

Ive erased plasma configurations so it starts with defaults. 
It also works good on fglrx drivers on my Radeon HD 2600.
But when i try to change my drivers on ati or radeonhd, both compiled from git with r600-r700 branches, plasma is crashing on kde startup. i dont think that is driver related, because every other applications and window managers work fine. 

Here is backtrace:

Program: Przestrzeń robocza Plazmy (plasma), sygnał SIGSEGV
0x00007f2d8c1b7fd0 in __nanosleep_nocancel () from /lib/libc.so.6

Thread 1 (Thread 0x7f2d915a6760 (LWP 8533)):
[KCrash Handler]
#5  0x00007f2d8cf74401 in QTimer::stop () from /usr/lib/libQtCore.so.4
#6  0x00007f2d9129a839 in PanelView::updatePanelGeometry (this=0x1cb5440)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/panelview.cpp:543
#7  0x00007f2d9129ba45 in PanelView::pinchContainment (this=0x1cb5440, screenGeom=<value optimized out>)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/panelview.cpp:689
#8  0x00007f2d9129d5d9 in PanelView (this=0x1cb5440, panel=<value optimized out>, id=<value optimized out>, parent=<value optimized out>)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/panelview.cpp:243
#9  0x00007f2d912a57b9 in PlasmaApp::createView (this=0x18a7ae0, containment=0x1a27e10)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/plasmaapp.cpp:619
#10 0x00007f2d912a5e71 in PlasmaApp::containmentAdded (this=0x0, containment=0x7f2d8c237020)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/plasmaapp.cpp:663
#11 0x00007f2d912a6097 in PlasmaApp::qt_metacall (this=0x18a7ae0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff996f0570)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/plasmaapp.moc:96
#12 0x00007f2d8cf6dd30 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#13 0x00007f2d90f418ff in Plasma::Corona::containmentAdded (this=0x0, _t1=0x1a27e10) at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdelibs/src/build/plasma/corona.moc:127
#14 0x00007f2d9128c78e in DesktopCorona::loadDefaultLayout (this=0x198e0f0)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/desktopcorona.cpp:214
#15 0x00007f2d90f446a5 in Plasma::Corona::initializeLayout (this=0x198e0f0, configName=@0x7fff996f0ad0)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdelibs/src/kdelibs-4.2.1/plasma/corona.cpp:263
#16 0x00007f2d912a31d7 in PlasmaApp::corona (this=0x18a7ae0) at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/plasmaapp.cpp:517
#17 0x00007f2d912a3355 in PlasmaApp::setupDesktop (this=0x18a7ae0)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/plasmaapp.cpp:255
#18 0x00007f2d912a60b8 in PlasmaApp::qt_metacall (this=0x18a7ae0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff996f0c60)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/plasmaapp.moc:94
#19 0x00007f2d8cf6dd30 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0x00007f2d8cf7461f in ?? () from /usr/lib/libQtCore.so.4
#21 0x00007f2d8cf69cf3 in QObject::event () from /usr/lib/libQtCore.so.4
#22 0x00007f2d8d6134ed in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#23 0x00007f2d8d61987a in QApplication::notify () from /usr/lib/libQtGui.so.4
#24 0x00007f2d8f96854b in KApplication::notify (this=0x18a7ae0, receiver=0x197bf60, event=0x7fff996f1310)
    at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdelibs/src/kdelibs-4.2.1/kdeui/kernel/kapplication.cpp:307
#25 0x00007f2d8cf5c401 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#26 0x00007f2d8cf83e86 in ?? () from /usr/lib/libQtCore.so.4
#27 0x00007f2d8cf8096d in ?? () from /usr/lib/libQtCore.so.4
#28 0x00007f2d8950aaa2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#29 0x00007f2d8950e21d in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#30 0x00007f2d8950e3db in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#31 0x00007f2d8cf808cf in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#32 0x00007f2d8d69404f in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f2d8cf5ad72 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#34 0x00007f2d8cf5af05 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#35 0x00007f2d8cf5d065 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#36 0x00007f2d91290e9b in kdemain (argc=1, argv=0x7fff996f18c8) at /srv/userstore/sandsmark/kdemod/kdemod-core/work/kdebase-workspace/src/kdebase-workspace-4.2.1/plasma/shells/desktop/main.cpp:54
#37 0x00007f2d8c137546 in __libc_start_main () from /lib/libc.so.6
#38 0x0000000000400809 in _start ()