This sounds like the infamous "
text loss"
bug. It was fixed in one of the patches, which also included a recovery system. When you started up again, it should have reverted back to a previous state. However, you need to have applied the patch to do so. If you have applied the patch, then this is very bad. If you haven't applied the patch, then I am really sorry that it happened, but announcements were made.
To apply the patch if you haven't done so, find the thread in the News forum that announced it and download the new drod.exe file, which should replace the old one. I just always rename the old ones in case I need to revert for whatever reason. I don't think your data can be recovered though.
Game on,
____________________________
"
He who is certain he knows the ending of things when he is only beginning them is either extremely wise or extremely foolish; no matter which is true, he is certainly an
unhappy man, for he has put a knife in the heart of wonder."
-- Tad Williams