Dr. Watson File

Recently, I discovered that my disk space was vanishing. Finally discovered that my drwtsn32.log file was 29GB (no mistake, gigabytes!!). Anyway, there was no application program (notebook, word, etc.) that could open a 29GB file so I finally decided to do the old shift-delete. Zappo, file gone. Now, I am not sure the system will automatically re-install a new drwtsn.log file. Is there anybody out there that knows how to set up the log file when the old one has been deleted? Does it make any difference if I don't even have on? By the way, so far the system is dumb, happy and ignorant to the fact that the file is missing, i.e., no error messages, etc.