[CentOS] Yum segmentation fault updating from 5.6 to 5.7

On Thu, 2011-09-15 at 18:37 +0200, sebastiano at datafaber.net wrote:

> And there's also plenty of available space on the other 5 boxes which 
> exhibit the same issue.

Sorry if this has been suggested already - have you tried running with
all plugins disabled?

'yum --noplugins check-update'

I have a very vague memory of encountering a problem similar to this
years ago when my mirrors file was corrupted.