After reading this message board I'm curious if anybody else out there is NOT having issues with PD4 (latest build) running XP Pro SP3. I have it running on a new Unibody 2.4ghz Macbook w/4GB RAM with OS X 10.5.6 as of yesterday. - Performance seems significantly faster for me than PD3. - CPU util is low enough I can and do leave the VM running all the time in the background (in a separate Space). This has not effected my battery life in any way which is impressive - Putting the Macbook to sleep and then resuming works flawlessly with PD4. I'm guessing it puts XP to sleep to? Who knows but it works 10/10 times. I just close the lid to sleep and open it to wake - Coherence works great without any glitches or issues if I decide to use it - Suspending the VM takes on average 2-5 seconds top. Resuming can take between 5-15 seconds (depending if it's loading from disk or cached in RAM). - XP shutdown time is about 5 seconds from hitting Shutdown in Start menu. Startup is approx. 25 seconds or less. - VM activity rarely has any impact on OS X performance. I can be installing apps, booting XP, running a task in the VM and continue working in OS X without any perceivable impact (only time I felt it was when there was a substantial amount of disk activity going on in VM) - USB devices all work fine with VM and OSX. - Shared folders work perfectly with no issues (recent build seems to have improved performance) I could go on and on. Am I the only one like this? I use the VM primarily for Office 2007 apps, Google Chrome and goofing around. It's configured for 2 vCPUs, 1GB RAM. If nothing else, I hope this gives people hope that it is possible to have a great experience with PD4 and best of luck! If sharing specifics of my configuration can help others, please ask and I'll be more than happy to post whatever you want.