We're actually in the middle of a systems overhaul for errata -- to provide faster response, quicker updates to electronic versions of content (current processes are unfortunately still tied to print-based workflow triggers), and a more useful interface for viewing errata. Unfortunately, that's meant temporarily diverting attention from processing current errata submissions. We're working through the backlog, but there will likely be delays for at least a few more weeks.
We do track all errata submissions, and will be processing yours shortly.
Director, Digital Content and Publishing Services
O'Reilly Media, Inc.