According to MattCutts via YouTube:
I decided to see how fast Jaunty Jackalope (Ubuntu 9.04) would boot with a solid-state hard drive.
I used Intel's new X25-E Extreme, which uses faster single-level cell (SLC) memory chips instead of slower multi-level cell (MLC) memory chips.
Total boot time from pressing power to Firefox loaded was about 22.5 seconds, with about 5 seconds of BIOS display on a Thinkpad.
That means that Ubuntu 9.04 booted into Firefox in about 17.5 seconds.
More PlayStation 3 News...