The boot time for a modern Intel Sandy Bridge system also increased. The SNB notebook with an Intel Core i5 2520M with a 160GB Intel X-25 SSD increased from 24.66 seconds to 35.26 seconds. This SSD system though had its maximum disk throughput during the boot process improve from 238MB/s to 147MB/s.
Lastly, on the Intel Core 2 Duo T9300 ThinkPad notebook with a 160GB Hitachi HTS72201 SATA HDD, the Ubuntu 11.10 boot performance was worse off. For this sixth and final system, the boot time increases from 23.20 seconds to 31.69 seconds.
On six out of six systems tested, this recent Ubuntu 11.10 development build was slower than Ubuntu 11.04. It's another release cycle since Ubuntu 10.04 LTS where the boot time has increased rather than decreased.