No problems... although my new computer isn't top notch. Installing the Windows XP mode right now for my label printer and this software to print stamps on letters and envelopes.
I had problems installing a few applications. Especially Microsoft Office 2007 (!!) doesn't work like expected. The "Business Contact Manager" crashed during install, complaining about a dll not registering. Several notices about incompatibilities, especially of Microsoft software
Not very compatible but I'm sure it's for the best. It was about time to get rid of some stuff from the early 1990's. XP mode ftw

What do you call a dinosaur with an extended vocabulary? A thesaurus.