Bug? mail threading of IMAP folders in evolution

[Rich Rudnick]

Before filing any bugs, I was wondering if anyone else has been seeing
the same problem I have.

On a new install of 5.04, evolution does not properly nest message
replies in imap folders, that is, I see 

Message
  Re: Message
  Re: Message

Where the references say the threading should be:

Message
  Re: Message
    Re: Message

I see this using both courier-imap and dovecot-imap. If I look at the
messages using a Maildir account, they are threaded properly.

Courier-imap is working fine under my hoary-unstable installation.

I have screenshots :)