Never saw this one before. I downloaded an XP network tutorial in pdf from Microsoft, and printed it out to give to my son. Some letters are missing in the printed document, and no matter what I try they still come up blank. Tried printing black ink only, etc. but always the same letters, f,i,t, but not all the f,i,t in the document. It's not a huge problem, but it makes it a little difficult to read for someone who is not familiar with networking and le sharing (file sharing)