No new members??

Hi all. I was wondering if anyone had experience with this:

for the past several months my site has been steadily gaining new members. I decided to add a new feature Modzzz escort module and corner peal to promote it. Lets say I had 19K+ members at an average gain of 300 pr/week with weekends being my highest influx. I then install the mods on a Thursday and boom! 3 new members on a Friday, five on Saturday, 2 on Sunday and so far 2 on Monday.... What the hell happened??? I usually get that much TOTAL in an hour or so.

Doesn't sound like a technical problem.  Perhaps those 19K members were spammers or people who haven't logged in since registering?  What's the member activity like?

Pretty good. Plenty of return members, steady page views and steady member influx for the past year with member to member interaction. I can understand a dip in new members but this is almost a hault.

What's the site?  I might have a better idea if I could see it.