Post your performance results

Here's a comparison between XP and Vista machines on otherwise identical network/NAS:

NV+ Setup:
Model: ReadyNAS NV+ [X-RAID]
Firmware: RAIDiator 4.00c1-p2-T45 [1.00a037]
Memory: 1024 MB [2.5-3-3-7]
Volume C: Online, X-RAID (Expandable RAID), 3 disks
Ch 1 : Seagate ST3500630NS [465 GB] 461 GB allocated
Ch 2 : Seagate ST3500630NS [465 GB] 461 GB allocated
Ch 3 : Seagate ST3500630NS [465 GB] 461 GB allocated
- Jumbo Frames disabled
- journalling disabled
- fast CIFS writes enabled
- Oplocks enabled on shares
- VistaBoost on

Network Setup:
- Netgear GS108 gigabit switch
- Cat 5e

Old PC #1 test: :)
- Pentium 4 @ 2.8 GHz
- 1024MB RAM
- Gigabit NIC jumbo off
- Win XP Pro
- iometer test as per yoh-dah specification
Write: 22MB/s
Read: 33MB/s
CPU utilisation during tests: 40%

New PC #2 test: :(
- Intel quad core Q6600 @ 2.8 GHz
- 2048 MB RAM
- Gigabit NIC jumbo off
- Win Vista Home Premium SP0
- iometer test as per yoh-dah specification
Write: 11.5MB/s (9.8 without VistaBoost)
Read: 6.5MB/s (6.1 without VistaBoost)
CPU utilisation during tests: 0-1%

Thanks Microsoft - I await Vista SP1.