Vista just stinks period!  I hate that OS. My wife's laptop has Vista.., my PC is using XP.  I'll take XP over Vista in a heartbeat.  
Another thing I noticed is Vista is like freakin updating every 60 seconds!  Scan this, run that...  The Vista OS with all it's various programs really dogs your RAM.
Also I don't know what you guys are using for Anti-Virus, but Norton will destroy your RAM.  The current Norton program IS NOT CPU friendly...  Norton slows my PC down all the time.  I've got over a gig of RAM on my PC, and I swear you can hear the CPU panting at times.
[This message has been edited by squeak_D (edited 07-16-2008).]
_________________________
GEAR:  Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller).  SOFTWARE:  Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.