kernel upgrade with yum removed old kernels

[Martin Marques]

Rahul Sundaram wrote:
> 
> * yum presto plugin which downloads delta rpms instead of full updates. 
> These aren't mirror widely yet but should happen sooner or later.

I found presto yesterday, but didn't fully understand what it was for. 
Could you give an example of how it works?

-- 
  21:50:04 up 2 days,  9:07,  0 users,  load average: 0.92, 0.37, 0.18
---------------------------------------------------------
Lic. Martín Marqués         |   SELECT 'mmarques' ||
Centro de Telemática        |       '@' || 'unl.edu.ar';
Universidad Nacional        |   DBA, Programador,
     del Litoral             |   Administrador
---------------------------------------------------------