I've been dealing with networked Windows since 3.1, then NT, XP and soon to 7. Each iteration has seen a huge improvement in stability. I doubt I have had a blue screen more than 2-3 times since we have had XP. I use graphics and computationally intensive GIS software (ArcMap and Erdas) and some other oddball things in addition to MS Office. The GIS stuff crashes 2-3 times per week but that's the software, not the OS. Folks at work tell me that 7 is a significant improvement. I hope so. Our IT folks don't like it because of software incompatibility issues that vendors say don't exist.