The first results are for the ASUS Eee PC NVIDIA ION netbook with an Intel Atom 330 processor. The hard drive is a Hitachi HTS54502 SATA HDD.
Bootchart on Ubuntu 11.04 x86_64 for this Atom netbook had a boot time of 31.48 seconds while under the Ubuntu 11.10 snapshot it increased to 59.62 seconds. While the boot time is slower, the maximum disk throughput for the EXT4 file-system improved from a peak of 66MB/s to 100MB/s.
Next up is another Intel Atom 330 system, but in the form of an ASRock NetTop with a 320GB Seagate ST9320325AS SATA HDD
The boot time here also increased from 25 seconds to over 58 seconds. The disk throughput was 71MB/s on Ubuntu 11.04 and jumped to 88MB/s on Ubuntu 11.10.