I was typing a matrix for a psychology study, and we use "m" for any holes in
the data. Someone neglected to fill out a large portion of their questionnaire,
so I had to type a long string of the letter "m." 

When I did this, Open Office Writer became very slow, and would become slower as
I progressed with the string of "m." The file became difficult to save (taking
multiple minutes, though I can't give an accurate amount of time, because I had
to step away from my computer). Even when I saved and closed the file and opened
another one, it started to do the same thing when I came across another
questionnaire with missing data (basically, what I am trying to say is that it
is not an isolated incident).