Can't receive system mail messages
For several hours each day, I cannot receive any mail messages.
This means, I cannot confirm trades sent to me, or receive resources
for trades I bid on.
( I receive the "New Mail" popups, but nothing in my mail box )
If I send a test message to myself, I get the "Mail Sent" popup.
A few seconds later, I get the "New Mail" popup.
Nothing in the mailbox.
Many hours later, I'll log in, and have all the messages in my box.
Any suggestions?
( It's on different computers, I've cleared cache, etc )