Opening some folders using new IMAP support results in the following message: "Error 9: Server error. Please try again later. "  Also, the command to open the folder is painfully slow.

Any news on when this will be fixed?

I am not the only one having this issue either.  The moderator asked people to create separte threads.  See http://answers.microsoft.com/en-us/windowslive/forum/mail-email/imap-throws-error-9-server-error-when-fetching/0c3bbff0-75c8-4a40-ba60-7669fb7da659