When updating kernel on current factory, it seems that zypper wants to install
kernel-default-3.18.3-1.3, although it is already installed:
sudo zypper up
Retrieving repository 'Packman repository (openSUSE_Tumbleweed)' metadata
...................................................................................................................................................[done]
Building repository 'Packman repository (openSUSE_Tumbleweed)' cache
........................................................................................................................................................[done]
Loading repository data...
Reading installed packages...

The following application is going to be installed:
  "dconf Editor"

The following 5 NEW packages are going to be installed:
  crash-kmp-default-7.0.9_k3.18.3_1-1.8 kernel-default-3.18.3-1.3 spax star
tcsh-lang


which leads to following conflict:
Checking for file conflicts:
...............................................................................................................................................................................................[error]
Detected 3 file conflicts:

File /boot/.vmlinuz-3.18.3-1-default.hmac
  from install of
     kernel-default-3.18.3-1.3.x86_64(repo-oss)
  conflicts with file from package
     kernel-default-3.18.3-1.1.x86_64(@System)

File /boot/vmlinux-3.18.3-1-default.gz
  from install of
     kernel-default-3.18.3-1.3.x86_64(repo-oss)
  conflicts with file from package
     kernel-default-3.18.3-1.1.x86_64(@System)

File /boot/vmlinuz-3.18.3-1-default
  from install of
     kernel-default-3.18.3-1.3.x86_64(repo-oss)
  conflicts with file from package
     kernel-default-3.18.3-1.1.x86_64(@System)

File conflicts happen when two packages attempt to install files with the same
name but different contents. If you continue, conflicting files will be
replaced losing the previous content.
Continue? [yes/no] (no):