Things like tables missing indexes on key columns, un-optimized database queries, wasteful algorithms... they're all bugs.
I agree that these are bugs, and that they need fixing. John, can you file issues for those, and mark them critical? You indicated that you fixed a comment.module issue, but we haven't seen an issue or patch yet? Please work with us to fix these bugs. Thanks. I'm still undecided about creating a dedicated mailing list or forum for this, but I'm looking to hear people opinion on this. That said, I'm going to setup two more mailing lists: consulting@drupal.org and themes@drupal.org. An overview of the existing list can be found at http://lists.drupal.org/. -- Dries Buytaert :: http://www.buytaert.net/