This week I have put a lot of hours into fixing all the problems with update.php from D5 to D6 (I've been on the road giving a week-long Drupal training, with nothing to do in the evenings ;-). The fruits of my labors are at http://drupal.org/node/157682. It is still in code-needs-work status. I am announcing the issue here for two reasons: 1. I want to avoid someone else duplicating this work and either wasting their time or causing my time to be wasted. 2. The patch contains a large number of small changes, mostly all over system.install. I'd like to get the review process going ASAP. The "needs-work" parts are things I haven't gotten to yet, but the things I have gotten to are "done" and ready for review. If some people familiarized themselves now with all the issues involved, once it hits CNR it won't take forever to get committed. This is also a great opportunity to familiarize yourself with the contrib schema.module and its database inspection and comparison capability. Thanks, Barry