This seems to be the rule instead of the exception here. I have tried to learn not to take it personally. Whereas we consider it common professional courtesy to let the applicant know one way or the other, apparently Koreans do not. I guess the motto here is no news is bad news. When applying for a job that I really want I harass them. I take the initiative and follow through. I call to make sure they got my materials, ask when the interviews will be and when the decision wil be made.