In the past I worked on BAM with BizTalk 2004. Now I'm on a project with BizTalk 2006 and again I'm the one to do the BAM part.
I played a bit with BAM and 2006 but nothing serious. I under the impression the way BAM in BizTalk 2006 works, or at least the way to create activities and views wasn't changed drastically.
So I went for a basic BAM implementation to get to know the implementation chain. A simple activity in an simple view and the view should show up in the BAM portal. And you can guess it.....it didn't work. There was no view in the view-list and nothing in the eventlog to help me with this. In these scenario's Google is my best friend, so I searched on Biztalk 2006 BAM and "no view to display". I ended up with only result: http://blogs.msdn.com/tihot/archive/2006/06/13/630313.aspx
This also didn't fix the issue.
At the end I suddenly remembered that in 2004 was also necessary to define accounts on the views so users had rights to view them. That actually solved the issue.