Ok, this seems to happen everytime there is an LSAT. Some wishful thinkers seem to hope that more than one section number was experimental, and every test since 1991 the experimental has been the same section number for all testers (this includes undisclosed February exams as well).
The reason for the discrepancies on this bulletin board is probably a function of memory and random crap rolling together. This can happen very easily after a long day of testing.
Based on what has been posted on this particular thread, it would seem that section 1 was experimental. That means it was section 1 for everybody!