404 after unsubscribing from a thread.

Clicking a link in an email to unsubscribe evetually took me to http://developer.qt.nokia.com/index.php/forums/ which is a 404 with error message:

404 error

checking for snprintf… yes
checking for X… libraries /usr/lib, headers .
checking for IceConnectionNumber in -lICE… yes
checking for libXext… yes
checking for pthread_create in -lpthread… yes
checking for extra includes… no
checking for extra libs… no
checking for libz… -lz
checking for libpng… -lpng -lz -lm
checking for libjpeg6b… no
checking for libjpeg… -ljpeg
checking for perl… /usr/bin/perl
checking for Qt… configure: error: Qt (4.0.4) (page) not found.
Please check your installation!