Установил на свой ubuntu-сервер для теста ksplice uptrack (применение багфиксов ядра без перезагрузки):
deb http://www.ksplice.com/apt precise ksplice
deb-src http://www.ksplice.com/apt precise ksplice$ sudo uptrack-upgrade
Cannot find Ksplice Uptrack information for your kernel version
(3.5.0-26-generic #42~precise1-Ubuntu SMP Mon Mar 11 22:19:42 UTC 2013).
Your kernel is probably not yet supported by Ksplice Uptrack.
See http://www.ksplice.com/uptrack/supported-kernels for a summary of
what kernels are supported.