Packages not signed?

[Wong Kwok-hon]

Hello!

When I perform update, I found the followings:-

# yum update
Loading "installonlyn" plugin
Setting up Update Process
Setting up repositories
Reading repository metadata in from local files
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package libpcap.i386 14:0.9.4-10.fc6 set to be updated
---> Package tcpdump.i386 14:3.9.4-10.fc6 set to be updated
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Updating:
 libpcap                 i386       14:0.9.4-10.fc6  updates            95 k
 tcpdump                 i386       14:3.9.4-10.fc6  updates           443 k

Transaction Summary
=============================================================================
Install      0 Package(s)
Update       2 Package(s)
Remove       0 Package(s)

Total download size: 538 k
Is this ok [y/N]: y
Downloading Packages:


Package libpcap-0.9.4-10.fc6.i386.rpm is not signed


Two packages were not signed included the tcpdump... Do any problem happened ?

Thanks!

Wong Kwok Hon