The problem Commons is facing since a while, is massively missing admin-power/resources.
On February 23rd, Commons had 9 mio files. (read on [[:de:WP:Kurier]])
Today (Febr 28th), Commons has 9.35 mio files. (as of [[Special:Statistics]])

That means, in 5 days 350.000 uploads needed to be checked for detecting blatant and not so overt copyvios, for attack images/pages, for personality rights violations, for useless bullshit, for clearly promotional material,  for missing source entry, for missing license, for missing permission (when uploader not identical to author), etc. etc.

This numbers might be off a bit because of a bit because of a batch upload, see http://commons.wikimedia.org/wiki/Commons:Geograph_Britain_and_Ireland 
As far as I know normal numbers are around 5000 uploads a day. 

Maarten