When you take a closer look at the key metrics of April or make diagrams out of them like here by Tateru Nine, who has been interviewed here about the growth, you can only come to one conclusion: growth is still there, but it has stalled.
What are the reasons? There could be many. Perhaps the bad performance - but that's something you experience after you've created an avatar, so perhaps not really. I personally think that the times of the big hype as Second Life as Web 3.0 are gone now - the time for bashing Second Life starts now, meaning usage and new account creations are going down and after that somewhat up again.
The question is: is this a good thing for a while? Yes. It gives Lindenlabs more time to work on their next generation architecture and some air to solve out some big issues. It is bad still in business terms since land sales should go down a little now, so I wonder how this affects the income of LL at all.