I doubt it. This is the first time I've seen such action reported. A bug
would probably have hit someone else before now.
Try quitting & re-launching Entourage.
If you haven't already, download and install the latest Office 2004 update,
which is Office 2004 Service Pack 1. Service Pack 1 includes a number of
fixes that are documented in this article on the Microsoft Knowledge Base:
<
http://support.microsoft.com/?kbid=883951>
In Office 2004, use Microsoft AutoUpdate to get the latest updates. From
any Office application, go to Help > Check for Updates (or manually launch
Microsoft AutoUpdate from the Applications folder). If any updates are
needed, they will display in a sheet, at which point you can check them and
press the "Install" button to download and install them.
Updates can also be found at the Microsoft web site:
Other things to check:
1. Have you assigned cmd-a to any scripts in the scripts folder/menu?
(meaning do any of them have \mA at the end of the filename)
2. Have you (in Panther) assigned any global commands to cmd-a?
Be especially wary of this feature. I use it, but its behavior isn't always
consistent.