Mana and the Jig O Vigor, true or rumor?

Tonight with a group, one member complained about me negating his SoW, but I
had no accel going (sheesh was in the group three minutes and hadn't sung a
note, besides why would I? They were campers). So I memorized Jig and
played it, mentioning how I thought it was supposed to increase regeneration
%15. The cleric informed me Jig was making his mana regenerate slower, he
"should have been done by now." Far from it for me to play a song not
wanted, forgot the Jig. After an easy battle and burnt mana, he told me,
indeed, mana regenerates faster without any bard Jig. Then things became
nasty, one fellow brought a train and I saved them all with a lullaby, and
no accelerando might I add, and quite a haul to the zone. But they thought
they were just good or lucky for all surviving that time and I didn't want
to try explaining to them what I did, so I just camped! Got me a little
irritated, just the remark that Jig was making them regenerate slower!? OO,
that's what got me.

All I know--these folks were hostile towards bards, and the fellow who was
the leader had to flee so I only met him briefly, perhaps he understood our
usefulness better. When I hit a bad group I don't stick around, so I was
with them maybe ten minutes tops, but perhaps I can't fault them from
experiences I've had with fellow bard's I've grouped with--some bards just
don't know what they're doing, this class takes some skill to wield with
finesse. I was with a bard once who consistently played hymn when all
health was full, and only used bellow in battle. That, now that, got me
irritated.

Er, back to my original question about Jig and Mana, sorry. Has anyone done
any definitive tests on this? With all my bard songs I have been able to
"play around" with them enough, to my satisfaction, to understand O how they
work. This is the way I like things, dead reckonings hands-on kind of
"feel" for how they work rather than really writing up numbers myself.
Thing is, I studied way too much experimental methodology in school to
really enjoy doing it when I'm playing, heheh. (Memories of torturing lab
rats!)

But I have no way to get an instinctive feel for this! DOES mana regenerate
faster with Jig or not? Anyone really use a stopwatch with a buddy? My
friends keep telling me they don't have stopwatches and have no time for
testing. I know it doesn't make regeneration slower, that cleric tonight
was just an arse, but I saved him anyway, fool didn't even realize it.

Roop