The log file that the Dr. Watson program generates is called Drwtsn32.log - use the search to find it. To understand what you are looking at in the log, use the Help and search for "dr" - the 2nd entry in the list is about logs and it explains logs quite well.
Are you running Norton CleanSweep? If so, you might want to have a look at this article from Microsoft: http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q314867
Are you running Norton CleanSweep? If so, you might want to have a look at this article from Microsoft: http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q314867