try this, as I had a similar problem and this fixed it.
1. click the desktop and press Alt+F2
2. type:
Code:
kdesu /sbin/yast2 'sw_single'
this starts software management directly
once all the updating and reading is finished, go to the drop-down menu and select "installation summary"
on the left hand side, check the box that says 'keep'
all your packages should be listed now
right click on one of them and go to "all in this list"
click "update if new version avaliable"
then click accept
good luck,
rabbit2345