a few black spots appears after upgrading to kde 4.10.3

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1

now some informations about my box
os: openSUSE12.3
KDE: 4.10.3
video card:GeForce G 103M
before this upgrate, i have already installed nvidia driver from http://download.nvidia.com/opensuse/12.3/ using zypper

i just upgraded my KDE to 4.10.3
upgrate procedure:
1, disable all repositories related to KDE
2, sudo zypper ar http://download.opensuse.org/repositories/KDE:/Release:/410/openSUSE_12.3/KDE:Release:410.repo
3,sudo zypper dup --from x in pure console(ctrl+alt+f1)
4,reboot

after updated, a few black spots appears in the top-left corner of my display screen. sometimes they just stay still, sometimes they disappear, and sometimes one of them are blinking.

please help me out! thanks advance!
screen snapshot:
http://i.imgur.com/Bwxgpjh.jpg

2

same issue being discussed here https://forums.opensuse.org/english/other-forums/community-fun/general-chit-chat/486583-strange-random-speckles-graphics-2.html#post2554207

3

thanks for your reply.
it seems there is not yet a feasible solution. how can i downgrade to KDE 4.10.2?