kristarella

I’m having a very similar problem. These two show up:

Warning: gethostbyaddr(): Address is not a valid IPv4 or IPv6 address in…

Warning: Cannot modify header information – headers already sent by…

Is this caused by a new plugin?

I had that problem. Sometimes there is a screw up with the upload and something weird happens. Email the guy who looks after gravatar.com, he’ll probably tell you to upload your pic again and he’ll make sure it works.