analytics tracker is not output on some (random) pages

It appears that the code inside analytics.vm that generates the tracking javascript calling the google analytics server is not faithfully output.

On prod today, one sees the code for:

• http://www.curriki.org/xwiki/bin/view/Coll_jpinto/eTextbooks

but not for:

• http://www.curriki.org/xwiki/bin/view/Coll_rmlucas/3Cells_0
• http://www.curriki.org/xwiki/bin/view/Coll_rmlucas/Grammar

Among suspects, is that the second missing URL is actually not found in the search.