Originally Posted by
baliktad
I'd actually prefer a message of this sort. It means that they know there are problems and have taken the system down to rectify them. The random "page cannot be displayed" or weird JBoss errors are more worrisome because they indicate problems the dev team aren't addressing.
It's also more worrisome because it means the IT team isn't capable of configuring the system to provide meaningful/user-friendly error messages.