RE: Li-Poly over-discharged
I do not always do as the book says... therefore I have done what the manufactors say not to do in these cases: I connect the battery to a standard NiCd-charger at 50 or 100mA charge for 4-5 minutes and then puts it back to my Schulse. This have worked great on my old E-Tec-packs, but I have never tried this on any newer LiPos.
If the alternative is to discard the pack it is worth a try, but as I said: it is not by the book, and of course take all the precautions against fire as is necessary!