I couldn't find an appropriate existing thread for this (and was shot down in "Database Error Thread"):http://www.penny-arcade.com/comic/1999/10/25/
is part of the back/next sequence, but clearly says it shouldn't be.
Also, I'm not sure if double-comics for the same date are considered an error, but I have a lot of examples of pages like this:http://www.penny-arcade.com/comic/1999/10/22/
If there's a better place to report problems like this, let me know. I happen to run across plenty of them while maintaining an unofficial PA search engine.
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