A few days ago, I installed Ubuntu 10.04 (Lucid Lynx) on my Super Talent Ultradrive GX 64GB (firmware version 1916 with TRIM support) and rebooted it thirty times to get some data from bootchart. Here are the results: The fastest boot took only 3.65 seconds. Impressed?
The default installation averages out at 4.5 seconds. The highest disk throughput was 204 MiB/s (thanks to ureadahead).
After everything was installed, the boot takes six seconds (probably due to liferea).
A SSD leads to a fast booting system, but then the processor has an impact on boot times too. Compare these boot charts with the one of the IBM ThinkPad T400. The SSDs are similar, but the processors differ: Core 2 Duo E8500 @3.16GHz versus Core 2 Duo T9400 @2.53GHz.
Do your system boots faster?