On Thu, 31 Dec 2009 09:46:13 -0800 (PST), Jimbo
wrote:

My house still has some of the original 100 year old paneled, pine
doors. Unfortunately, they are all warped to some degree. Is there
any way to fix this?

Place the door on the grass for a few hours on a sunny day. The side
against the grass will expand somwhat. Of course this doesn't always
work as expected, but it will correct some warp.