Won't start by itself

[gregsj@mail.imm.com]

Fellow Audians;  After three months of bliss, the honeymoon has come to an abrupt 
end. My '91 200TQW will not start itself. The problem first reared its head Monday 
after work. I turned the key and nothing happened. Same thing about three times. Got 
out of the car, for a moment, had a look around and got back in. Turned the key; it 
quickly started and off we went. It started right up yesterday morning; did the wait until 
I'm ready yesterday afternoon after work, and I had turned the key twice this morning 
with nothing but on the third try it started right up. There's no long rhrhrhrhrhrhrh grind, 
just nothing, and then a quick Brrp and off we go. It's consistently inconsistent. This 
afternoon after work it would not start period. I pushed it on to the parking garage ramp 
and jump started it (popped the clutch in 2nd) and off we went, no problems. Right now 
it's into the third hour on a battery charger. Its got to be an electrical gremlin, but I 
have no idea where to start. Well, not exactly true, I did check the fuses, there did not 
seem to be a dedicated starter fuse, but they all seemed to be OK and seated 
properly. If it helps that car has 86K. Any an all advice greatly accepted. TIA Greg