lost membership in builtin/adminstrators

From: alicia t (atownsend_at_nhbayarea.com)
Date: 08/27/03 

Date: Wed, 27 Aug 2003 09:06:54 -0700

I have a new sql 2k box that I have built and have set up
sqlserver agent with a mail profile for notifications. I
had to reboot the machine after I configured the mail
profile and when I logged back in my domain account had
been removed from the builtin/administrators group. This
has happened twice now. Has anybody had this experience?
-alicia t