Mail inbox message time gone

Hi,

I noticed today that the time emails arrive has gone from my inbox. Where it used to give a time of arrival for each message, it just says Today, or Yesterday...It still shows the time in the email header, but not in the inbox main window like before.

Any one happen to know how to get back the time display, please?

Thanks.

 

It is, yes. Strange, too, that Mail's stopped connecting. I can browse in Firefox, but Mail shows all exclamation marks next to my email accounts...