Isso parece um aviso inofensivo. O rpm não encontrou a chave de assinatura gpg, ou algo parecido. Este é o fim da saída? Em caso afirmativo, você pode precisar configurar o yum para ignorar o problema da chave de assinatura.
De alguma forma, encontrei um repositório para o plug-in flash do fedora core 3. Quando tentei instalar o plug-in flash, encontrei este erro. Eu não consigo entender o que isso significa, ou como resolver esse erro.
[root@g22 ~]# yum install flash-plugin
Setting up Install Process
Setting up Repo: opennms-unstable-fc7
repomd.xml 100% |=========================| 951 B 00:00
Setting up Repo: opennms-testing-fc7
repomd.xml 100% |=========================| 951 B 00:00
Setting up Repo: flash
repomd.xml 100% |=========================| 1.9 kB 00:00
Setting up Repo: opennms-stable-fc7
repomd.xml 100% |=========================| 951 B 00:00
Setting up Repo: opennms-snapshot-fc7
repomd.xml 100% |=========================| 951 B 00:00
Reading repository metadata in from local files
opennms-un: ################################################## 23/23
opennms-te: ################################################## 25/25
flash : ################################################## 4/4
opennms-st: ################################################## 22/22
opennms-sn: ################################################## 27/27
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for flash-plugin to pack into transaction set.
flash-plugin-9.0.48.0-a.i 100% |=========================| 5.9 kB 00:00
---> Package flash-plugin.i386 0:9.0.48.0-a set to be installed
--> Running transaction check
Dependencies Resolved
Transaction Listing:
Install: flash-plugin.i386 0:9.0.48.0-a
Is this ok [y/N]: y
Downloading Packages:
flash-plugin-9.0.48.0-a.i 100% |=========================| 2.5 MB 06:10
warning: rpmts_HdrFromFdno: V3 DSA signature: NOKEY, key ID 8df56d05
public key not available for //var/cache/yum/flash/packages/flash-plugin-9.0.48.0-a.i386.rpm
Qualquer pequena ajuda é muito apreciada. :)
Tags yum adobe-flash