A few months ago i changed over from vbulletin and almost since day 1 of me uploading the dolphin files to my server.. spam registrations have been a problem.
It is ridiculous, and at least 30 minutes out of my day is now spent trying to determine which profiles are spam and which ones are legit.
with vbullitn i maybe had 1 spam registration per day... now i get more like 10 per day.
I hope there are improvements to the base software and tools are added to combat this in future releases.