My work email has been mullered by a bizarre conflict between Google Desktop and Microsoft Outlook. If you’ve been unable to right click on emails, or forward emails as attachments, you might have the wrong version of Google Desktop installed. Upgrade!! They’ve fixed it.
More on the problem here, if you’re interested. Without search, email is that much less useful: one of the reasons why I love Gmail, and the new search features built into Vista and Outlook 2007.