Hello,
On my side, I have quite solved my issue.
quite mean it is really better, but not "perfect" compared to competition.
let me remind here my config :
macbook pro ( bought last month), proc=2.26 ghz, ram =4 gb, hd= 500 gb / 7200 tr.min, screen = 13"
parallel is the latest version : 5.0.9310
my vm is :
Windows seven 64 bits, entreprise edition ( coming from my work).
installed with bootcamp, on a separate partition of my disk, this partition is totally used by windows.
what is new since I had so many trouble to work with this VM :
-the hard disk is more fast than the stock one. ok, I didn't notice a big improvement, but it was a little bit better
- in the preferences of parallel, i use : "Manually set the amount of memory", and fix it at :1500MB.
- in the preference of my VM, i use : 1200 MB
- I use all the 3d acceleration ( I need it to work, I develop application using opengl, and WPF/silverlight)
and use 250 MB for the video
- 1 processor
- disable adaptive hypervisor
- disable autocompress
- optimize performance for osx
- removed all shared application, I use only the shared folder
- removed the vertical synchronization, because I don't need it.
in osx, I use again spotlight (I tried to remove it, it changes nothing)
then, I have to admit that today, the difference is amazing. my VM is really usable, even if some competitor I have tested recently are doing also good job ( but I bough Parrallel, I stay with this software now).
the VM is quite fast to load, visual studio is working fine ( this tool is a processor/memory/disk ressource eater)
and osx is really fast.
what is not working well :
I have installed the great tool : Istat, which gives me the memory allocation, in real time.
if I open too many tools, everything can start to slow down.
what does it mean in reality ?
I have currently opened :
Microsoft entourage (because, here, our exchange server is a 2003 one

(
Chrome (one tab)
Safari (4 tabs)
Parallel desktop
amsn ( one conversation in progress)
xcode (I was looking for the ipad simulator, but not found

(
I have still 229 MB free.
osx is fine,
my VM is fine.
I hope it could make progressing this post, and Parrallel desktop, which is anyway a great work.
Olivier