Screen flickers after enabling desktop effects on kde-4.3.3

[kumara258]

Someone help me please

Screen flickers after enabling desktop effects on kde-4.3.3

OS:  Linux 2.6.30.9-102.fc11.i686.PAE i686

  System:  Fedora release 11 (Leonidas)
  KDE:  4.3.3 (KDE 4.3.3)

Processor (CPU):   AMD Turion(tm) 64 X2 Mobile Technology TL-56
  Speed:  800.00 MHz
  Cores:  2


Vendor:   DRI R300 Project
  Model:   Mesa DRI R300 20090101 x86/MMX+/3DNow!+/SSE2 TCL DRI2
  Driver:   1.4 Mesa 7.5-devel

Thanks