I have a home built in 1942. Wood single pane windows in good condition that have wooden storms. While old, the system works very well.
I have one problem area that really baffles me though. In my living room I have two smallish (roughly 1.5 x 3) non-operable windows on either side of the fireplace. They both have wooden storms on them and I left them on last year (our first year in the house, but it's pretty obvious that they haven't been taken off in a while).
The windows have Western exposure and during the warmer months they get a great deal of condensation on the inside of the storm window - but only in the later part of the day when they are getting full sunlight. None of my other windows on that side of the house have this problem.