Looks like there wasn't quite enough testing. That said, I don't think that anyone could argue that the bug was damaging. No one browser was ever left out or in the same position.
Daniel Einspanjer's journal
Data warehousing, ETL, BI, and general hackery
- Microsoft's random browser ballot
When I saw what the page was supposed to do, (first five and last five sets displayed in random order) the first thing I thought was, "Man, I hope they tested the fool out of that or someone will make a fool out of them."