I am all packed and ready to head off to sunny Dublin with some of the Black Marble Design group to see the good folks at Microsoft Ireland and present on some of the great things Black Marble and Microsoft are up to. Expect two days of Expression, Phone 7 and Windows 7 goodness with Black Marble flair
When I was at DDS a nice chap asked me if I knew about WPF performance and the answer was no but I did do some digging and just for the record this is what I found , comments welcome.
Perf in WPF
Perf tools for WPF
the most important bit could be .NET 3.5 SP1
you need to make sure that the problem is not poor code performance ( your code )