Attached patch fixes this bug in 3.5.3
--- iceweasel-3.5.3/debian/iceweasel.1.orig 2009-10-20 13:41:27.000000000 +0200 +++ iceweasel-3.5.3/debian/iceweasel.1 2009-10-20 13:41:39.000000000 +0200 @@ -16,7 +16,7 @@ .SH USAGE \fBiceweasel\fR is a simple shell script that will set up the environment for the actual executable, \fBfirefox\-bin\fR. -If there is a Iceweasel browser already running, \fBiceweasel\fR will +If there is an Iceweasel browser already running, \fBiceweasel\fR will arrange for it to create a new browser window; otherwise it will start the Iceweasel application.
