I'm back on ASP.NET (at least more than last year :-)) - And it feels great (again) digging deep into some interesting areas around user interfaces (also WPF!!!), processes and tasks, state management, async stuff (multi threading/AJAX & JSON) and so on...
Activating ActiveX Controls
Adobe's comments on the topic...
IE Persistence Behaviour
Tabbed Browsing for Developers
Search Provider Extensibility in Internet Explorer