I haven't heard of anything specific with Lsoft apps and SP4, but there are definitely some issues with SP4, see link - http://www.winnetmag.com/articles/index.cfm?articleid=39644 John Traweek Senior Account Director Publishing Concepts, LP 12840 Hillcrest Rd, Ste 230 Dallas, TX 75230 Phone - 972.774.3280 Fax - 972.448.1622 -----Original Message----- From: Anne Harwell Toal [mailto:[log in to unmask]] Sent: Thursday, July 24, 2003 9:35 AM To: [log in to unmask] Subject: SP4 ? Are there any problems with applying Service Pack 4 to a Windows 2000 server running Listserv? Getting ready to do it and I wanted to check if anyone else has had bad experiences. -aht