I noticed that posting comments was taking 15 to 20 seconds. I typed “movabletype comment posting delay” in Google and found this article with these instructions about an anti-spam service, blitzed.org, that has gone out of business. The comment posting routine was trying to contact the defunct service and check to see if the poster was coming from a “blacklisted” spam source. It would give up after 15 to 20 seconds.

Fix instructions:

1. Login to Movable Type. (Your account will need to have System Administrator privileges.)

2. Click on the “Plugins” link in the main navigation on the left hand side.

3. Look for the “SpamLookup – Lookups” plugin set listed among your other plugins.

4. Click “Show Settings.”

5. Under “IP Blacklist Services” highlight and replace the text “opm.blitzed.org” with “zen.spamhaus.org”.

6. Click “Save Settings.”

Comment posting much quicker now! I think this formal kind of support is an advantage of using MovableType