one thing I've noticed is that the so called opening game between Germany and Canada is not really the opening game.
it's in fact the second game of the world championschip. the first game is Nigeria v France
(http://en.wikipedia.org/wiki/2011_FIFA_Women's_World_Cup)
even do the game between Germany and Canada is not the the opening game it is depicted as such in the media.
as far as I know this was never that way before, a novelty. normaly the first game of a Worldchampionship is the opening game .
and I think the opening ceremony is before the so called "opening game".
in the actual world ranking of woman football is germany on place 2 and canada on place 6 (26) .
(http://de.wikipedia.org/wiki/FIFA-Weltrangliste#Rangliste_der_Frauen)
I think there is a big Gas storage underneath the stadium (http://www.forst-grunewald.de/html/erdgasspeicher.html) that
cause the stadium to rise and sink (http://www.welt.de/die-welt/article3855942/Berliner-Olympiastadion-huepft.html)
Quote (free tranlation (article from 2009)):
The Olympic Stadium frisks
A Gas storage underneath the stadium rises and sinks the stadium
Berlin- when today ten thousands of people watch a game in the olympic stadium they sit 6 centimeter higher as compared to football games in nineties.
latest measurements from the radar satellites ERS-1 und ERS-2 (research project called; "Terrafirma") show that the ground arround the area of the olympic stadium has risen 6 centimeters
the Gas operator there (GASAG) is in "technical service" and "no operation" status from 01.06.2011 until 01.08.2011.
the reason for that is specified because of "Umkomplettierungsmaßnahmen".
the problem is I never heard this word before and it seems that it does not exist at all.
I can try to translate it is something like: “not completion actions”
http://www.erdgasspeicher-berlin.de/portal/servlet/OpenPortal (click on the left side on "speicherdienste" and then click "wartung")
The stadium is closed since yesterday officially because of the FIFA
http://www.olympiastadion-berlin.de/fileadmin/content/tourismus/oeffnungszeiten/OpenJuni2011.pdf
there are three webcams inside the stadium where you can look at it live (all 10 min updated)
all three are offline
http://www.olympiastadion-berlin.de/nc/stadion-besucherzentrum/webcams.html
please note that because of maintenance works the picture updates could be impaired.
In preparations and/or events it is not always possible to show you actual pictures from the stadium. please have sympathy for this
Edit: where to find the data on the side of GASAG Berlin