Please, do not delay this "Important" multiple security update. See https://rhn.redhat.com/errata/RHSA-2009-0225.html for more info. This update is "5.3" kernel but has been released as security update too. RHN pushed this kernel one day ahead of rest of 5.3 packages (on my servers). RH maintains API and ABI (!) compatibility so there is no problem to use this kernel AFAIK. So please, do not delay it anymore, this contains multiple security vulnerabilities fixed since 2009-01-20. Thank you for your effort (a lot). M.K. -- Milan Keršláger http://www.pslib.cz/ke/ http://www.nti.tul.cz/wiki/Milan.Kerslager