lanceA and x2495iiii, thanks for your efforts.
Sorry for the late response, here in Jerusalem we (at least I) just woke up
Regarding memory leaks - it needs lots of time and space to go through all kind of performance problems existed in Alice, but I can mention one simple problem, which can be solved easily: the
infinite undo stack. With an undo mechanism that records every action of the user, the garbage collector would never be able to clean anything in you World session, since everything (objects, methods, events, lines of codes, etc.) is pointed by the undo/redo stack. Simply limiting the undo stack length solves that.
Regarding the "My Library" folder - if you right click an object, you have an option to "save to my library", so that simply acts as a user gallery. When you open the object gallery, you'll find 3 root folders in it (in addition to local and web galleries), the third being your (user) gallery. I found it very useful for reuse of my own created objects.
I'll be glad to have a Room regarding Mama - please open one (if you could). By the way, you'll find many more improvements to Alice, which I guess I'll have to find the time to document in detail.
x2495iiii - could you describe exactly what was the error message you got when installing on Windows 7? and how you manage to install it (if you did)?
I will check the import problem you mentioned and try to find a solution.