Duplicate Incoming msgs to Beta inbox dated Dec 31, 1969

[Graine]

Can someone pls explain why I've been receiving down loading msgs to my inbox from an unknown source, dated Dec 31, 1969. It's been happening the past couple of days.

 

[Bor de Wolf 1965]

This bug has been introduced with the last update of the program.
It has something to do with variable type declarations that changed as far as I understand.