There is a Hotfix KB947521 exactly for this Problem when HTTP Compressing is enabled this may occur http://support.microsoft.com/kb/947521 Greetings Daniel Klaeger IT-Administrator Häny AG Pumpen Turbinen und Systeme Buechstrasse 20 CH-8645 Jona Telefon Direktwahl: +41 44 925 43 24 Telefax Direktwahl: +41 44 793 42 19 E-Mail: daniel.klaeger@xxxxxxxxx <mailto:daniel.klaeger@xxxxxxxxx> Internet: http://www.haeny.com <http://www.haeny.com/>