If an H-1B, H-2A, or H-2B petitioner submits evidence establishing that the primary reason for failing to timely file an extension of stay or change of status request was due to the government shutdown, USCIS will consider the government shutdown as an extraordinary circumstance and excuse the late filing, if the petitioner meets all other applicable requirements.
As of 27 April 2012 count, USCIS has received 29,200 regular cap H-1 B petitions and 12,300 advanced degree H-1B petitions. These numbers are considerably higher than the ones we saw at this time in the fiscal years 2011 and 2012 (we are now in FY 2013).