Report your bugs here - if someone else has already mentioned the same bug, just add on to their post with as much info as possible to make the hunting easier.
When i add now a new disc the date of publication is "oct. yyyy" ???
I edit the disc, I erase the "oct." , i close CDpedia, i open CDpedia and the "oct." is return ???
What you want to change is the way dates are displayed in the preferences. In the release field in the preferences change "%b %Y" to "%Y" to display only the year.