Rails - Apr 2006 - Migrations & Postgres: Change column not functional?

I''ve got a MySQL app, which I''m moving to a new server which
is using
Postgres. This seems like the perfect application of migrations. (Note: I
don''t mean "using migrations to switch from MySQL to
Postgres" so much as
"Hey, I''ve _been_ using migrations all along, and this is where I
cash in".)

There were some odd bugs when working with the site, and I traced it to two
columns which had the "wrong" data types. Actually, they had *earlier*
data
types: Types that had changed in earlier migrations.

It appears that Postgres didn''t execute a number of
"change_column"
instructions. It''s not clear to me, at this point, whether that was a
Postgres error, or something else. Has anyone else seen this behavior?
I''m
also wondering if this might be version-dependent: I''ve got Postgres
7.4.7and Rails
1.0...
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://wrath.rubyonrails.org/pipermail/rails/attachments/20060407/d194283f/attachment-0001.html