Nope. I had a 100% SSL secure site before installing your plugin and setting the first profile picture. Another user (DonCoryon) already explained the error in your coding.
Your answer is not satisfying. The issue is clearly caused by your plugin.
As you do not seam to be able to resolve this issue, I will warn other users from installing it and give it a bad rating. Braking the SSL with your code is not acceptable.
