There are people who applied in January and waiting for the file numbers.
According to divagirl's post from the below thread
"If everything is in order, you may not get your file number and would receive the nomination letter directly and not to panic as it is not yet 5 months since the date you applied"
http://www.canadavisa.com/canada-immigration-discussion-board/-t14904.0.html;msg78234#msg78234
felix31 said:
yep,
I sent it Feb 6th and was delivered Feb 9th. Technically, on Thursday it will be 2 full months