Some useful views of the DebianInstaller bugs in the bug tracking system:
Bugs in packages maintained by the d-i team (also includes all installation reports): http://bugs.debian.org/debian-boot@lists.debian.org
Bugs in other packages in Debian that affect d-i: http://bugs.debian.org/tag:d-i
Installation reports, categorised using usertags: http://people.debian.org/~fjp/d-i/installation-reports.html link]