I have been running 3188 since it was release with few or no problems. I"m very very pleased with it. 1. Windows XP Pro SP2 using Boot Camp partition as Parallels VM runnin on an Imac Core Duo with 1 gig of ram. Works pretty well. A little slow of course with only the 1 gig, but no major glitches. 2. Windows Vista Ultimate purely as a Parallels VM running on a Mac Book Core 2 Duo, also with 1 gig of ram. Again it performs pretty well with no major problems. I plan on upgrading both machines to 2 gig Ram when I can afford it. But for now running the occasional windows program on either machine works fine. The main programs I run on the Windows side are Office 2007 and Acrobat 8 Professional. Both run pretty well. No complaints here.