Plaxo Wants To Import Blank Contacts

After upgrading to Plaxo 1.61 for Thunderbird last week, my regular version of Plaxo has mysteriously started to want to import blank contacts via Plaxo in Outlook. There were 11 blank contacts when I checked Plaxo online. Now, I guess these could have been introduced errorneously from some other source rather than Thunderbird, but I'm very suspicious since I haven't seen anything like that until I upgraded to 1.61.

Same issue here, each time I log on the number of blank contacts that Plaxo seeks to import goes up by one.