You create web parts on a Microsoft Office SharePoint Server-based website. If you add Exchange Server 2007 Outlook Web Access (OWA) as a web part, the active area focuses on OWA unexpectedly. For example, a user's OWA inbox or OWA calendar is added as a web part at the bottom of the page, Internet Explorer scrolls down automatically when the users views this page in Internet Explorer. Therefore, certain important content on the top of the page may be missed.
This problem occurs because Exchange Server 2007 OWA is not aware that it is inside a webpage.
To resolve this problem, install the following update rollup:
2279665 Description of Update Rollup 1 for Exchange Server 2007 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.