[root@linux-jswf repos.d]# zypper install http://releases.merproject.org/releases/0.20111104.1/builds/armv7hl/debug/dbus-debuginfo-1.4.14-1.1.Mer.armv7hl.rpm
Error building the cache:
[|] Valid metadata not found at specified URL(s)
Warning: Disabling repository 'mer-core-armv7hl-source' because of the above error.
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following NEW package is going to be installed:
  dbus-debuginfo

1 new package to install.
Overall download size: 838.0 KiB. After the operation, additional 2.1 MiB will be used.
Continue? [y/n/?] (y): y
Retrieving package dbus-debuginfo-1.4.14-1.1.Mer.armv7hl (1/1), 838.0 KiB (2.1 MiB unpacked)
Retrieving package dbus-debuginfo-1.4.14-1.1.Mer.armv7hl (1/1), 838.0 KiB (2.1 MiB unpacked)
warning: /var/cache/zypp/packages/_tmpRPMcache_/dbus-debuginfo-1.4.14-1.1.Mer.armv7hl.rpm: Header V3 DSA/SHA1 Signature, key ID fff260fb: NOKEY
The package integrity check failed. This may be a problem with the repository or media. Try one of the following:

- just retry previous command
- refresh the repositories using 'zypper refresh'
- use another installation medium (if e.g. damaged)
- use another repository
/var/cache/zypp/packages/_tmpRPMcache_/dbus-debuginfo-1.4.14-1.1.Mer.armv7hl.rpm Public key is unavailable