Printer

I use the company printer to print the file suddenly found print out the file is not me, I asked other colleagues did not print something, but everyone says no, I find it very strange, do the printer is broken? Waited a little, gave my file to print out. I browse inadvertently click the first file, only to find it was a project I only do a good job last night, not yet reported to the company, this will be how to print out? I would like is when I just printed the wrong point.