Using evolution-2.10.2-3.fc7 with IMAP inbox, I'm noticing that the display is frequently not updated correctly. In particular, deleted messages are not hidden (even though this option is selected), and new mails are not displayed. The folder window shows new emails, but the header window does not. You have to switch to another folder and then back to inbox to get the display updated correctly. I'm attaching a screenshot to demonstrate.
Created attachment 158361 [details] screenshot of problem
After restarting DNS this problem went away. Looks like a DNS timeout was the cause ... the display did eventually update after three minutes.