Wow! Lots of good info here! Thank you all!

Some answers to some of the questions asked along with a few new
questions:

-Water-
I am using tap water, although I did try using bottled water (Spring
Water actually) and still had a problem. I was brewing a kolsh in that
instance. I have had other people in our area that brew good beers
tell me our water is very good for beer brewing. Not sure why it's
good but it works for them! I have no problem with spending a few
bucks on bottled, spring, or dionized water if they would help. Which
is the best to use?

-Sanitizer-
One-step that I have purchased from my local beer supply house
([url]www.listermann.com[/url]) comes in a small bag with the official label. I
guess they could be repackaging it though. It is like a extra strong
ziplock bag..

-Wild Yeast-
I buy the recipes with all the ingredients allready measured out.
The yeast is a dry yeast in a sealed package.. I can't imagine more
people would not complain to the beer store if it was the issue.
Anything is possible though!

- The 2 good batches-
One was an irish stout with the acidic additive to look and taste like
guiness (and it and it's foam did look just like guiness!). The other
was a very hoppy Pale Ale. I think the pale ale was so hoppy, that a
mild case of this bad taste may have been there and It was so covered
by the hops that it went unnoticed.

-Bad flavor and stomach aches-
It will really give you a stomach ache without drinking but a few
ounces. The guy at the beer supply mentioned phenolics (spelling?) as
well. He stated that you usualy dont taste them much, but you will
recognize the hangover feeling and the stomach ache.

So, I think I have a good idea now from all of your responses that the
problem is related to a cleaner of some kind. Either Chlorine in the
water, or some leftover residue from a sanitizing product. I should
mention, after my first batch (which was a good batch) I cleaned with
dish soap. I learned later that Dawn dish soap leaves a residue that
lead to my first bad taste in batch #2. My 3rd batch included all new
equipment and an upgrade to a autosyphon and 2 glass carboys.
EVERYTHING but the bottle capper was replaced.

That being said, would it be ok to boil water and put my equipment in
it to sterilize it and kill off any remaining residue? How about
pouring boiling water in the fermenter? How long would I have to boil
for?

I had a brewing friend ask his brew mentor about my issue. His friend
replied with "Don't use those sanitizers. Flush out your equipment
with a little bleach and water, rinse well, and then brew". Any
thoughts on this? I'm not wild about bleaching something that will
contain an edible drink, but it would be a different cleaner!

Thanks again for all your responses and information! I look forward to
your replies and will be picking up a new batch of stuff for a Irish
Stout for my next attempt over the holidays.