eBay Member Mails Goes to Trash

Mac OS X 10.7.5. Updated to the latest security updates.

This just started happening two weeks ago; never happened before that. Mail has no rules regarding eBay or the Mail's Trash. How do I stop this from happening? Junk mail filtering is turned on but the mails are not flagged as junk, they just go into the Mail's Trash. Only mails from members are trashed, mails from eBay's "system" are not.