YOU update fails after "prelinking"
I tried to search for this to see if it had already been asked or answered but the new seach function took over 3 minutes and was still churning. If it's been answered already, my apologies.
Ok, for anyone that has problems using Yast Online Updates after running prelink, you can solve this problem but editing your /etc/sysconfig file.
Close Yast first, then go into your favorite editor as root and open /etc/sysconfig/onlineupdate. Find the YOU_USE_DELTAS= section and change it to YOU_USE_DELTAS="no". Reopen Yast and you should be able to do updates again without the have the delta MD5 checksum error.