Removing Old Kernel and associated files

[Joseph L. Casale]

After an install of 810, I see during subsequent package installs
the recommendation to run #apt-get autoremove on extra kernel files.

Before running it, I have:
ii  linux-generic                              2.6.27.11.14                                Complete Generic Linux kernel
ii  linux-headers-2.6.27-11                    2.6.27-11.27                                Header files related to Linux kernel version
ii  linux-headers-2.6.27-11-generic            2.6.27-11.27                                Linux kernel headers for version 2.6.27 on x
ii  linux-headers-2.6.27-7                     2.6.27-7.16                                 Header files related to Linux kernel version
ii  linux-headers-2.6.27-7-generic             2.6.27-7.16                                 Linux kernel headers for version 2.6.27 on x
ii  linux-headers-generic                      2.6.27.11.14                                Generic Linux kernel headers
ii  linux-image-2.6.27-11-generic              2.6.27-11.27                                Linux kernel image for version 2.6.27 on x86
ii  linux-image-2.6.27-7-generic               2.6.27-7.16                                 Linux kernel image for version 2.6.27 on x86
ii  linux-image-generic                        2.6.27.11.14                                Generic Linux kernel image
ii  linux-libc-dev                             2.6.27-11.27                                Linux Kernel Headers for development
ii  linux-restricted-modules-2.6.27-11-generic 2.6.27-11.16                                Non-free Linux kernel modules for version 2.
ii  linux-restricted-modules-2.6.27-7-generic  2.6.27-7.12                                 Non-free Linux kernel modules for version 2.
ii  linux-restricted-modules-common            2.6.27-11.16                                Non-free Linux 2.6.27 modules helper script
ii  linux-restricted-modules-generic           2.6.27.11.14                                Restricted Linux modules for generic kernels

After running it I have:
ii  linux-generic                              2.6.27.11.14                                Complete Generic Linux kernel
ii  linux-headers-2.6.27-11                    2.6.27-11.27                                Header files related to Linux kernel version
ii  linux-headers-2.6.27-11-generic            2.6.27-11.27                                Linux kernel headers for version 2.6.27 on x
ii  linux-headers-generic                      2.6.27.11.14                                Generic Linux kernel headers
ii  linux-image-2.6.27-11-generic              2.6.27-11.27                                Linux kernel image for version 2.6.27 on x86
ii  linux-image-2.6.27-7-generic               2.6.27-7.16                                 Linux kernel image for version 2.6.27 on x86
ii  linux-image-generic                        2.6.27.11.14                                Generic Linux kernel image
ii  linux-libc-dev                             2.6.27-11.27                                Linux Kernel Headers for development
ii  linux-restricted-modules-2.6.27-11-generic 2.6.27-11.16                                Non-free Linux kernel modules for version 2.
ii  linux-restricted-modules-2.6.27-7-generic  2.6.27-7.12                                 Non-free Linux kernel modules for version 2.
ii  linux-restricted-modules-common            2.6.27-11.16                                Non-free Linux 2.6.27 modules helper script
ii  linux-restricted-modules-generic           2.6.27.11.14                                Restricted Linux modules for generic kernels
ii  linux-sound-base                           1.0.17.dfsg-2ubuntu1                        base package for ALSA and OSS sound systems

Why does it leave linux-image-2.6.27-7-generic and linux-restricted-modules-2.6.27-7-generic?
Also, what is the significance of the 2.6.27-11.14 and 2.6.27-11.27, why wouldn't
I just have say 2.6.27-11.27?

Thanks!
jlc