rodren@rodren:~$ sudo aptitude purge ~ilinux-image-.*\(\!`uname -r`\)
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Writing extended state information... Done
The following packages are BROKEN:
linux-restricted-modules-2.6.27-9-generic
The following packages will be REMOVED:
linux-image-2.6.27-7-generic{ap} linux-image-2.6.27-9-generic{p}
linux-image-generic{p}
0 packages upgraded, 0 newly installed, 3 to remove and 135 not upgraded.
Need to get 0B of archives. After unpacking 189MB will be freed.
The following packages have unmet dependencies:
linux-restricted-modules-2.6.27-9-generic: Depends: linux-image-2.6.27-9-generic but it is not installable
The following actions will resolve these dependencies:

Remove the following packages:
linux-restricted-modules-2.6.27-9-generic
linux-restricted-modules-generic

Score is 188

Accept this solution? [Y/n/q/?] y
The following packages will be REMOVED:
linux-image-2.6.27-7-generic{ap} linux-image-2.6.27-9-generic{p}
linux-image-generic{p} linux-restricted-modules-2.6.27-9-generic{a}
linux-restricted-modules-generic{a}
0 packages upgraded, 0 newly installed, 5 to remove and 134 not upgraded.
Need to get 0B of archives. After unpacking 191MB will be freed.
Do you want to continue? [Y/n/?] y
Writing extended state information... Done
(Reading database ... 115710 files and directories currently installed.)
Removing linux-image-2.6.27-7-generic ...
Running postrm hook script /sbin/update-grub.
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.27-12-generic
Found kernel: /boot/vmlinuz-2.6.27-9-generic
Found kernel: /boot/memtest86+.bin
Replacing config file /var/run/grub/menu.lst with new version
Updating /boot/grub/menu.lst ... done

Purging configuration files for linux-image-2.6.27-7-generic ...
Running postrm hook script /sbin/update-grub.
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.27-12-generic
Found kernel: /boot/vmlinuz-2.6.27-9-generic
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst ... done

rmdir: failed to remove `/lib/modules/2.6.27-7-generic': Directory not empty
dpkg - warning: while removing linux-image-2.6.27-7-generic, directory `/lib/modules/2.6.27-7-generic' not empty so not removed.
Removing linux-image-generic ...
(Reading database ... 115706 files and directories currently installed.)
Removing linux-restricted-modules-generic ...
Removing linux-restricted-modules-2.6.27-9-generic ...
update-initramfs: Generating /boot/initrd.img-2.6.27-9-generic
(Reading database ... 115645 files and directories currently installed.)
Removing linux-image-2.6.27-9-generic ...
Examining /etc/kernel/prerm.d.
run-parts: executing /etc/kernel/prerm.d/last-good-boot
Running postrm hook script /sbin/update-grub.
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.27-12-generic
Found kernel: /boot/memtest86+.bin
Replacing config file /var/run/grub/menu.lst with new version
Updating /boot/grub/menu.lst ... done

The link /vmlinuz.old is a damaged link
Removing symbolic link vmlinuz.old
you may need to re-run your boot loader[grub]
The link /initrd.img.old is a damaged link
Removing symbolic link initrd.img.old
you may need to re-run your boot loader[grub]
Purging configuration files for linux-image-2.6.27-9-generic ...
Running postrm hook script /sbin/update-grub.
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.27-12-generic
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst ... done

rmdir: failed to remove `/lib/modules/2.6.27-9-generic': Directory not empty
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Writing extended state information... Done

Current status: 134 updates [-2].

看红色部分
为什么会这样

linux-restricted-modules-2.6.27-9-generic 已损坏，请先卸掉他。出错的原因是因为/lib/modules/2.6.27-9-generic目录非空。也就是说损坏的linux-restricted-modules-2.6.27-9-generic并没有被卸掉或者是有残留文件存在。导致卸载失败。请先修复linux-restricted-modules-2.6.27-9-generic，然后卸掉linux-restricted-modules-2.6.27-7-generic.最后卸掉内核。

谢谢ＬＳ