KB og files in C:/Windows

Windows XP Home SP2 :

In the above folder there are over 150 log files all entitled KB******.txt.

Some are in blue and some in black, and many are years old. Although I haven`t

opened every one, those that I have read seem to be error reports, sometimes

relating to software on my machine, and sometimes apparent failures with Windows

Update . The errors cannot have been major, as everything seems to be working

fine and I am not getting pesky reminders from Windows Update about anything.

Is it safe to delete any or all of these, please? And can I configure things so

that either these reports are deleted automatically after a certain time, or are

not generated in the first place (although I guess they could be useful on

occasion)?

Many thanks

Kate