Yesterday I had to run a plugin upgrade that handles our user avatar uploads on your profile pages.
Unfortunately there were problems with the developer’s updates. I had to roll the plugin version back, which caused an issue with our caching system. So you might have seen some “off” behavior last night. These problems should be resolved now, and the developer has fixed their problem. The new version has been uploaded and it all appears to be working correctly from my testing.
If you run into any issues with user avatars or anything else related to the forum, shoot me a quick email at firstname.lastname@example.org and I’ll take another look.