Comment 1 for bug 1046906

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Ubuntu follows a slightly different versioning scheme than the upstream Linux kernel. The version number of the upstream kernel increases with a new stable release. However, when the Ubuntu kernel is updated to a new stable release of upstream kernel, only upload number and possibly ABI version is changed (see https://wiki.ubuntu.com/Kernel/FAQ/GeneralVersionMeaning for more details about Ubuntu kernel versioning).

If you wish to know, which upstream version the currently running kernel is based on, run
$ cat /proc/version_signature
Ubuntu 3.2.0-30.48-generic 3.2.27

The first field is always "Ubuntu", the second field is the Ubuntu kernel version (3.2.0-30.48-generic), and the final field is the upstream version (3.2.27).

You can also use the kernel version mapping (http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html) to convert a Ubuntu kernel version to the corresponding upstream version. For example, your 3.2.0-29-generic maps to version 3.2.24 of the upstream kernel.