id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
18648	ConditionalGetMiddleware does not work with Internet Explorer	KyleMac	nobody	"For whatever reason Internet Explorer (tested 9 and 10) append the original uncompressed content length to the end of If-Modified-Since and so it fails to parse in ConditionalGetMiddleware.

The header I'm seeing in Fiddler from IE9 is the following:

    If-Modified-Since: Thu, 19 Jul 2012 12:48:50 GMT; length=51894"	Bug	closed	HTTP handling	1.4	Normal	needsinfo			Unreviewed	0	0	0	0	0	0