From: Patrice on
> It seems like a generic question, like "is it true that 'int' in C# is
> bigger than 'int' in C++?" It's a fact that in ASP we were told that it's
> a bad idea to store objects in Session variables because of threading
> problems--unless the objects were "both-threaded". I'm asking whether this
> issue exists in ASP.NET.

This is the other way round.

ASP.NET uses MTA. You can force STA using the ASPCompat attribute :
http://msdn.microsoft.com/en-us/library/zwk9h2kb.aspx

IMO, it's unlikely you'll ever have to use COM components and much less
storing them in session variables...
--
Patrice