We've been using Presstopia for over a year now without a problem.

But just recently the app has become unusable because I'm getting logged out after an incredibly short period of time.  It seems to be less than a minute.

I followed the instructions I found here:

http://presstopia.com/dnn/Default.aspx?tabid=170&ptid=540&threadid=3966&forumtype=posts

But that only resulted in an error page when I attempted to access any presstopia pages.

I'm running Presstopia for .NET 1.1

We had the same problem. The 'solution' works, but has to be put into a web.config at the root directory (create one if none exists) level.