master browser has received a server announcement

I am getting the below error on our DC from some of our
network PC's, how can I stop this from happening

Event Type: Error
Event Source: MRxSmb
Event Category: None
Event ID: 8003
Date: 19/11/2003
Time: 11:51:08
User: N/A
Computer: TOM
Description:
The master browser has received a server announcement from
the computer REVIVE-CLAIRE that believes that it is the
master browser for the domain on transport NetBT_Tcpip_
{BFC00A96-9CDF-. The master browser is stopping or an
election is being forced.
Data:
0000: 00 00 00 00 03 00 4e 00 ......N.
0008: 00 00 00 00 43 1f 00 c0 ....C..À
0010: 00 00 00 00 00 00 00 00 ........
0018: 21 00 00 00 00 00 00 00 !.......
0020: 00 00 00 00 00 00 00 00 ........