For reasons best known to itself, EVERY time I load FS2004 nowadays I get a message telling me that it's, "Building Database for New Scenery Files." It does this whether I've installed new scenery or not. I've ticked the box to instruct it to empty the CD-ROM scenery cache on exit, but that doesn't make any difference.
Whatever it's doing, it's playing havoc with my frame-rates. I have it set on a max frame-rate of 25, and it will now typically jump from, say, 24 down to 6 or even zero, and then back up again for no apparent reason. It does this in scenery areas and at airports that never previously showed any frame-rate problems.
Constructive suggestions appreciated!