at least until this is made to work.
Index: src/common/tracker/Artifact.class.php
===================================================================
---- src.orig/common/tracker/Artifact.class.php 2011-08-22 21:07:40.557440659 +0200
-+++ src/common/tracker/Artifact.class.php 2011-08-22 21:08:08.155687398 +0200
-@@ -1541,10 +1541,6 @@
+--- src.orig/common/tracker/Artifact.class.php 2012-03-09 14:49:42.515533608 +0100
++++ src/common/tracker/Artifact.class.php 2012-03-09 14:49:59.151854974 +0100
+@@ -1563,10 +1563,6 @@
"\n".util_make_url ('/tracker/?func=detail&atid='. $this->ArtifactType->getID() .
"&aid=". $this->getID() .
"&group_id=". $this->ArtifactType->Group->getID()) .