Fix conflicts between kernel-headers and glibc-headers that causes following error;
Transaction Check Error:
file /usr/include/scsi/scsi.h from install of kernel-headers-2.6.22.19-vs2.3.0.34.46.planetlab.x86_64 conflicts with file from package glibc-headers-2.5-42.el5_4.3.x86_64
file /usr/include/scsi/scsi_ioctl.h from install of kernel-headers-2.6.22.19-vs2.3.0.34.46.planetlab.x86_64 conflicts with file from package glibc-headers-2.5-42.el5_4.3.x86_64
file /usr/include/scsi/sg.h from install of kernel-headers-2.6.22.19-vs2.3.0.34.46.planetlab.x86_64 conflicts with file from package glibc-headers-2.5-42.el5_4.3.x86_64