Album Data stopped

The last couple of days I was adding several CD's to my Itunes Library. With the exception of one or two obscure discs all the Album data appeared as soon as I loaded the CD. Then, suddenly, EVERY CD I tried to add brought up a message that there was no data online available. I am wondering what has happened. Is there a limit to the number of albums I can add, (daily, weekly or whatever)? Or has there been a change, at New Year's, of the loadability of discs via ITunes? Or could there be some setting that I have inadvertently changed. It is a pain to have to type in all the data for an album (Name, Artist, Track Names, etc, from the discs) especially when just a few hours before I didn't have to do hardly anything more than insert my disc and add it to my Library.