Mollom's been doing a simply outstanding job of blocking spam lately, after the warm-up period. Unfortunately, it appears to be doing a bang-up job of blocking legitimate, breathing humans who are trying (and failing) to comment. I'm moving antispam back to Akismet for awhile, and am hoping it's just a growing pain for Mollom - I really like the system and design, but can't have valid people frustrated when they try to post comments. For now, it's back to moderating comments through Akismet...