If your kernel update error refers to glibc-2.4-4mdk.i586, this is possibly caused by the following:
You updated to Mandriva Linux 2007.0 using the install DVD (or possibly the four CD set).
The install disk includes glibc-2.4-4mdk.i586
The update kernel packages depend on glibc-2.4-7mdk.i586
glibc-2.4-7mdk.i586 is available on the Mandriva ftp mirrors in the main software media source.
If you have a fast Internet connection, the solution to your problem may be as simple as setting up the Internet Software Media Sources for use with the Mandriva Linux Package Manager. Go to Easy URPMI
and follow the directions on the WEB site.