A few days ago I reinstalled my Ubuntu Linux PC. I was still using Ubuntu 6.06 Dapper Drake but decided to install Ubuntu 6.10 Edgy Eft since I had no problems with it on my laptop.
I am always a bit reluctant about upgrades so I decided to completely reinstall the system. But before I did I clocked my boot time under Dapper Drake (which uses Sysvinit), from pressing the power button on my PC till the GDM login screen took 67 seconds.
Then I installed Edgy Eft and installed all the applications I previously used and got the settings back (had some troubles with Evolution) and then clocked again. This time from pressing the power button till the GDM login screen took 55 seconds. Upstart gave an improvement of 12 seconds, that's pretty much I think.