I am running a relatively new machine with XP service Pack 2, a 3.06 GHz Intel Processor and 1 Gig of Ram. As a long time user of Version 9 which has always worked well and I was looking forward to version 10 for improvements and added capabilities, what I got was a nightmare. Version 10 is completely unusable and locks up 90% of the time. Another note is that if you open a project created in version 9 it converts it into a project that can only be used in 10. So all the 9 projects that I opened in 10 are now unusable in version 9.Pinnacle should be ashamed of themselves for releasing such trash.