repeat lockout of Win2000

From: Andy H (andyhaymond@hotmail.com)
Date: 04/10/03 

From: "Andy H" <andyhaymond@hotmail.com>
Date: Thu, 10 Apr 2003 12:29:13 -0700

About every 30 minutes my account locks itself, even if I
am logged in at the time. What scenarios would make this
possible? Our IT department cannot figure it out.