[Yum] update stuck!?

[David Timms]

Christian Stalberg wrote:
> When I run yum update on Fedora Core 4, all the packages download, then 
> the system says
> 
> "Running Transaction Test"
> 
> and it just sits there...for many many hours, without any further 
> messages. What is the problem?
Does top show yum as using lots or little cpu ?
# yum -d 255 update might provide useful information

Are you trying to upgrade between os releases ?

DavidT.