Saluton!
How did I miss this thread earlier? 
(Oh yeah, I haven’t been on the boards much lately…)
Translating the US Constitution? Are you still working on this? PM me; if you have a text maybe I can polish it a bit…
I occasionally see it misused here in public notices in third person or neutral forms, as though it’s just a slightly posher sort of future tense, without the implication of compulsion that I was brought up to understand from it in those uses. Always strikes me as odd.
It’s not usual to hear it in the first person as a normal future tense. Most people would say “I’m going to [do whatever]”, or avoid any difference between “will” and “shall” with “I’ll…”
I believe that’s what Chronos was talking about. I remember being told that the distinction between shall/will was reversed for first person singular.
The only logic I’ve ever come up with for the difference is “shall” is compelling yourself, while “will” is a declarative statement of what you will do, and thus suggests that you feel obligated to do so.
I, like John Mace, treat “shall” as archaic. I find “should” or “must” or similar to be sufficient.