I am using Parallels Destop 4 (en_US-4.0.3810.237520) and when I use the Parallels Compressor during the process a windows popup window tells me that there`s not enough virtual memory and the page/swap file has to get larger (or Windows is making it larger). When the Parallels Compressor has finished then everytime I start windows the same popup window appears after a minute or so. I installed Windows again and tested it and I can say for sure that Parallels Compressor is causing this problem. I also noticed that the process of Parallels Compressor became worse. Sometimes there will be no information window that the process is over and also Windows freezed totally. I hope it get fixed soon because I was used to compress my Windows to save space on my HD without harming my Windows XP Home Edition with Service Pack 3.