For the past few weeks, I have been receiving messages on the board that my mailbox is full. I deleted most of my messages and kept receiving the same "mailbox full" message. I went on my laptop and found over 8000 unread messages. I have not used the laptop in a month or so. On my computer, when I press "control" and "a", it highlights the deleted messages and then when I press "delete", it deletes them. This does not work on my netbook. I can only delete about 10 at a time. I spent about an hour and only deleted about 1,000 messages. HOW CAN I DELETE ALL MY UNREAD MESSAGES ON THE NETBOOK?