We're noticing a lot of condensation on our windows. Where's it all coming from? We're in a small house in San Diego. It has a single wall-furnace. It's typically about 70F inside the house, and the outside has been between 35-60F (it's been relatively cold here), and we've had rain on/off for the last couple of weeks, so the ground is wet/moist. I think/hope the condensation is normal but I'm worried this could be a sign of a problem that could grow into something serious. What amount of condensation should we be worried about? We have not noticed any mold yet, except a little bit on the bathroom tiles. Our windows are old, single-paned windows, so I think the house isn't all that air-tight. Should I be worried? Thanks.

I installed a prehung door for a closet in a playroom and the rough opening height was 83". I don't know the exact size of door because I am not posting from home right now, but when I put the door in the opening the gap from the header to the top was rather large I thought, especially for 2 1/4 inch casing to go over it. So... I shimmed the jambs up to a grand total of I believe 1 1/4" off the subfloor and then took the shims out. Several days went by (and I have yet to install the casing, just getting to it) and I kept thinking that with carpet thickness, I would be ok. However, realizing that the bottom of the baseboard will only be 1/2" off the subfloor, this still leaves me with a gap of about 3/4" between the bottom of the baseboard and the bottom of the door jambs. I know casing goes on first, but is there any other way to reconcile this gap as it will look out of place besides taking the door off and redoing it? Can the carpet people use thicker padding or should I just do what is probably a little more frustrating, but correct in the long run and take the door down and start over. Somehow, I got the door plumb. This is in an unfinished room in a 2 year old house. ty163