package linux-image-2.6.27-7-generic 2.6.27-7.14 failed to install/upgrade: unable to make backup link of `./boot/vmlinuz-2.6.27-7-generic' before installing new version: Operation not permitted

[lpnhc]

fail to update. Thanks for readed!

ProblemType: Package
Architecture: i386
DistroRelease: Ubuntu 8.10
ErrorMessage: unable to make backup link of `./boot/vmlinuz-2.6.27-7-generic' before installing new version: Operation not permitted
LsUsb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Package: linux-image-2.6.27-7-generic 2.6.27-7.14
ProcCmdLine: User Name=UUID=05BB-05BA loop=/hostname/disks/home/username.disk ro ROOTFLAGS=sync quiet splash
ProcVersionSignature: Ubuntu 2.6.27-17.46-generic
SourcePackage: linux
Title: package linux-image-2.6.27-7-generic 2.6.27-7.14 failed to install/upgrade: unable to make backup link of `./boot/vmlinuz-2.6.27-7-generic' before installing new version: Operation not permitted