I blogged about a post-SP2 Outlook 2007 release that optimized Exchange server connections and now there is a new cumulative update available that adds some performance improvements for certain operations with Windows 7 and for those that have experienced slow performance with Office 2007 Service Pack 2.
The June 30th, 2009 Outlook update (KB 970944) includes many updates that are of interest mostly to developers but I have highlighted a few of the updates that have proven to be noticeable to end users:
This hotfix provides an improvement to Outlook 2007 if performance is slow after you install 2007 Office Service Pack 2 (SP2).
In your mailbox, a folder contains thousands of subfolders, such as the Inbox folder or the Calendar folder. After you install the February cumulative update, when you try to check the size of the folder, you receive an error in the Folder Size dialog box. After that, when you try to open the folder or some subfolder, you receive the following error message: Cannot display the folder. Your server administrator has limited the number of items you can open simultaneously. Try closing messages you have opened or removing attachments and images from unsent messages you are composing
You start Outlook 2007 in Cached Exchange Mode and with the reading pane active. If an e-mail message that contains a custom form that has code is displayed in the reading pane, CPU usage increases or Outlook even crashes. This problem occurs after you install Office SP2.
When you are running Outlook 2007 on a Windows Vista-based computer that uses high DPI (for example, 120 DPI), icons for custom forms will not be displayed.
On a computer that is running Windows 7, the Delete and Sync operations perform slowly in Outlook 2007 after you install SP2.
A hotfix enables you to set the download mode for IMAP accounts in Outlook 2007 and to configure the setting to sync the mailbox when you exit Outlook 2007
When you send an e-mail message from a shared mailbox in Outlook 2007, the sent message is not saved in the Sent Items folder of the shared mailbox
In Outlook 2007, when you view a group schedule in Calendar, the text in the group schedule is blurry. In this case, visually-impaired users cannot read the text in the group schedule.