Here's a little more info, equally troubling... I had downloaded a copy of my links.db and url.db databases two days ago, just to be safe (fortunate timing). Looking at the bad files from today, they both end with record 55. No surprises here, #55 is the entry that got corrupted when the file was somehow cut off.

The problem I noticed is that the backup I downloaded on the 12th shows 258 records in url.db and 271 records in links.db. Both were downloaded at the same time and were based off the same build. Shouldn't the number of records match (I spot checked individual records and they lined up)?

What happens after a link is entered in the admin section and before a build is done? Is it the "add link" or the "build all" that places it in the database? I imagine the build only affects the category pages and the like.

Could this be related to the problems mentioned with regards to the nph-build.cgi script?

Dan