Aug 2009, Revised Review
I sold my copy of Parallels and bought VMFusion. For more than a year now, I have never had one problem with Fusion. There's considerable confusion about the quality of Parallels 4.0-- still many, many problems. Just go to Amazon.com (US) and look at the reviews of people who've actually bought Parallels 4.0. The return rate is very high. Complaints about customer service (or the lack of it) is very high.
Let me offer a suggestion, since there is some confusion.
1. There is no need to buy Parallels (or any Virtual software) if you're only going to use Apple's proprietary system Bootcamp. All you have to do is install Windows on Bootcamp. Now, there's the hassle of coming in and out of Bootcamp to access your Mac side.
2. I've now been using VMWare Fusion for almost one (1) full year. I have never, never once had to reset it. Or, lost any work because of the glitches that were (and, apparently) still are a problem with Parallels. I bought VMWare, just like I bought Parallels with my own money: not a promotional gift, so I have no reason to slander any company for any reason. VMWare FUSION--JUST WORKS! Period. 12 months--NO Problems whatsoever! If you need more verification, just go to Amazon.com (US) read some of the testimonials from VMWare Fusion owners. It's just that simple. Great product. (When you got to see the reviews by current owners of Parallels for Mac 4.0, keep in mind what I wrote here.) Nothing's changed. Unfortunately.
1.0 out of 5 stars Parallels--A revised, Critical Review- Jan. 16, 2008,
I wrote an early review of Parallels Desktop, roughly about 7 months ago. It was one of the first softwares I bought for my new MacBook Pro for the express intent of bringing some of my Windows only applications to my laptop and to have access to Internet Explorer-- which, I know, is near the bottom of the barrel, but many secured sites will only give access to IE.
I installed it and after installing Windows XP Home, no problem for several weeks. Then the virtual system for no apparent reason would start to drag. After several frustrating days of constantly hitting the "reset" arrow. I directed my complaints to the Parallels Support-email. They got back to me in 3 days. BTW, they do offer telephone support but you don't want to know the cost.
I had to end up taking Parallels off the entire system and then re-installing it, fresh. Including Photoshop Elements. All well for a couple of more months, now it refuses to open up any software and doesn't recognize the wireless remote.
I originally gave it a cautious 4 stars. Now after 7 months, I'm at the point of washing my hands of it and going over to VMware Fusion. My Windows needs are very slim, so I need something that just works: and Parallels just doesn't do it for me.