Can't reset or disable autocomplete, which reads wrong contact addresses

When trying to add and email on the invite field the autocomple totally goes crazy and with lightning speed chooses an address which has nothing to do with the person (or email) I was trying to add... it becomes impossible to add anyone.. right now I have to write the emails on the notes field and then cut / paste it into the invite field!

This is really freakish 'cause I have deleted database, preferences, deleted all accounts, deleted recent email preferences on the mail preferences folder and NOTHING seems to reset the autocomplete of my ical (Calenders now)!!