I have problems with WP-hashcash I'm afraid.
Using BuddyPress and WPMU, all newest versions (WordPress MU 2.9.2, BuddyPress 220.127.116.11)
Comments in Blogs:
- they all give the "0 is is not a valid hashcash value" we know from other comments about hashcash
- I think you have the same problem on the plugin page http://wordpress-plugins.feifei.us/hashcash/ I bet many good comments are in your moderation queue (mine is at least)
- blocked for all(!), no more spam registrations but also no more good registrations
So, of course I had to deactivate the plugin and flag as broken. Which now leads to massive amounts of sploggers. Would be cool to see some reaction here or to the comments on the plugin website. Thanks!
If I can help in any way, please tell me. I will try. Would be great to get this good idea out of broken state.