This weekend I purchased a 2001 Honda Accord EX with 58k miles.
I had it checked by my mechanic who said it was in great shape except
for a front right baring that needed to be replaced.

I told the dealership, and they said no problem and they fixed it (they
have an expansive service station on their site).  I was happy, and
agreed to buy the car.  They detailed the car, shampoo'd it, changed
the oil, did brake work so it was in top shape, and things like that.

I drove it home on Saturday and it drove great, except I noticed that
the windows were fogging up.  Didn't worry too much, because it was
raining really hard and I thought maybe it was a weather thing.  (And
from the smell of the car, I have a feeling the previous owner smoked
in the car).

Sunday I didnt drive the car at all, but we had snow and terrible
freezing weather.

Then today, Monday morning, I go to drive my new car.  I turn on the
ignition and notice the red brake light has come on.  I keep the car on
as I scrape all the oced up windows (about 10-15 minutes).  I get back
in the car, and the light is still on.  Check parking brake first, and
it's off.  Turn car off and on again, light comes back on.

Start to drive to work anyhow.  Light stays on for a good ten minutes.
At one point I apply the brakes slightly at a curve in the road, and
the light goes off!  At this point I am noticing how horribly foggy the
side windows are.  I mean, REALLY fogged up.

A few minutes later, brake light comes back on.  Stays on for about 10
minutes.  Then goes off again.  Stays off again for the rest of the
drive to work (another 10 minutes).

I call the dealership.  They say the FOGGING is most likely a result of
the car being shamppoed.  They said when it doesnt dry completely, in
cold weather like this it can get fogged up, and it should clear up
soon.

In terms of the BRAKE LIGHT, he said that it makes no sense because
they just did all the brake work.  And what he said is that sometimes
they notice when they do a full maintenance on their cars (before
selling) that a dashboard light will come on as the car readjusts to
all the settings.  He said if it comes back on, to bring it back to the
dealership and they will look at it.

This afternoon I turned the car on again, just to check it out, and the
light has not come back on.

Does ANY of this seem reasonable?
Should I be completely alarmed?

Any advice would be greatly appreciated.
Thanks!