Same for me. I also use an email account only for sl. Never have any outside communication with it. I got the Paypal spam only on this account. I have at least 9 other mail accounts hosted with same provider. Only my Sl based account got that mail. It was easy to recognize as spam. But it is strange that other accounts are not affected. Probabilty teaches that I should get it on other accounts too. Maybe later. but not yet..