Hi guys,
I previously had opensuse 11 with factory build kde (4.0). I also have compiz effects enabled. I decided to upgrade kde to 4.1.3. First of all, I disabled compiz and switched to kwin. Then I successfully updated kde and all dependencies too. At next reboot kde starts loading and finally give me an error as follows and leaves me with nothing but a blank screen.

A fatal error occured
The application plasma workspace (plasma) crashed and caused the signal 11 (SIGSEGV)

I am not able to post log here because my windows partitions are not writable. How can I change these permissions from failsafe root login? I am not familiar with any linux commands..
Can you guys please help me out?

I put "plasma workspace" in google search and this is what I found.

You have to install ntfs-3g with Yast and mount the Windows partition with it. With command: fdisk -l you can find out which device is your Windows partition is, let's say it is /dev/sda1 and you have a directory already for it called "/mnt/windows". First unmount it and remount with ntfs-3g with these two commands as root:
If you do not have a directory to access the Windows partition you'll have to make one and mount it like so:
You can name the directory whatever you want, I just used /win as an example that will work. I'm not sure if you can install anything from failsafe mode, but you can try.

Sorry I should have googled it first.
That article says navigate to:

/home/username/.kde4/share/config

Edit or remove the file plasma-appletsrc. This is the file that is responsible for the KDE variables like wallpaper and many other.

what is the command to delete this file?

Sorry also, was off-line for a bit.
As root: rm -f plasma-appletsrc

If your user name is bill, you would navigate to /home/bill/.kde4/share/config. You probably know but I figured I would mention just in case.

i used this command as root
mv /home/akshay/.kde4 /home/akshay/kde4old

and it worked as it restored all settings to default
Thank you all !!!