Do you have any other repositories beside standard one (like kubuntu.no-ip.org)? If yes, you may want to comment them out and redu update + upgrade and see if it helps.
I suspect that you may have older test binary with different md5 sum somewhere in the cache.
Do you have any other repositories beside standard one (like kubuntu.no-ip.org)? If yes, you may want to comment them out and redu update + upgrade and see if it helps.
I suspect that you may have older test binary with different md5 sum somewhere in the cache.