You should be more careful filling GATE 2012 application forms online. Online GATE application form ends on 17 October 2011 at night 11 PM and you may send your completed application forms to respective zonal offices till 24 October 2011. Candidates should fill up and submit the GATE application form as instructed by the GATE authorities and read the FAQ from the GATE 2012 page : iitk.ac.in/gate/gate2012/faqs.php