[copyrite]

I just noticed the modified column in my Calibre library consists only of yesterday's date. When I look at the path for random older books the file dates are older, most of the directories are also older, many matching the files dates (for the most part). It's not as though I somehow managed to edit the library in 'one fell swoop'. When I checked the library database for errors there were none. The files in the library also match the information in the database. Is this probably a corrupt database file that needs to be rebuilt?

Thanks.

ETA: I am seeing this in the entire library, not just a search or VL subset.