From Proquest:

The next ProQuest(r) platform enhancement release will be on December
15, 2007. A twelve (12) hour maintenance window will take place to
install these exciting new enhancements. 
The window will begin 
Saturday, December 15, 2007, at 19:00 (7:00 PM) Pacific Time 
and end 
Sunday, December 16, 2007 at 7:00 (7:00 AM) Pacific Time. 

The following products will be unavailable during this window: 

*	ProQuest interface products, ProQuest Historical Newspapers
(traditional and graphical K12 interface), American Periodicals Series
*	Third-party databases such as ERIC(r) PlusText 
*	ProQuest Archiver(tm) 
*	eLibrary(r), SIRS(r), and CultureGrams(tm)
*	"Digital Vault" products, including ProQuest Dissertations &
Theses and Digital Sanborn Maps
*	Chadwyck-Healey products housed in the US (all products with
domain names ending with chadwyck.com)



Please share this information with your colleagues.

--
Alison Ray