Warning: Table './interoperating/mark_sessions' is marked as crashed and should be repaired
query: SELECT u.*, s.* FROM mark_users u INNER JOIN mark_sessions s ON u.uid = s.uid WHERE s.sid = 'iv89vhqsumfkv7qr85ti3iftn2' in /home/.sites/99/site76/web/interoperating.info/mark/includes/database.mysql.inc on line 174
Mark's web presence | nothing very exciting, just some guy's web presence
Well there's your problem!
That is lots. The new "files to index at once" feature was added for cases like this. I am curious (and hopeful) that it will help. Is your content fairly stable or does it change frequently? I'm asking because if you have 17,00 files and you index 10 at a time, that's 1,700 cron jobs to index the whole wad. Of course, if you update any files that were previously indexed, they get reindexed.
Not sure how to handle the large files, but we'll work something out.