EVent ID 8005 & 4319 logged in the system every minute

Event Type:      Warning
Event Source:      MRxSmb
Event Category:      None
Event ID:      8005
Date:            13/April/2006
Time:            10:20:53 AM
User:            N/A
Computer:      AD02
Description:
The browser has received a server announcement indicating that the computer AD02 is a master browser, but this computer is not a master browser.
Data:
0000: 00 00 00 00 02 00 58 00   ......X.
0008: 00 00 00 00 45 1f 00 80   ....E..€
0010: 00 00 00 00 00 00 00 00   ........
0018: 86 16 00 00 00 00 00 00   †.......
0020: 00 00 00 00 00 00 00 00   ........


Event Type:      Error
Event Source:      NetBT
Event Category:      None
Event ID:      4319
Date:            13/April/2006
Time:            10:20:53 AM
User:            N/A
Computer:      AD02
Description:
A duplicate name has been detected on the TCP network.  The IP address of the machine that sent the message is in the data. Use nbtstat -n in a command window to see which name is in the Conflict state.
Data:
0000: 00 00 04 00 01 00 54 00   ......T.
0008: 00 00 00 00 df 10 00 c0   ....ß..À
0010: 01 01 00 00 00 00 00 00   ........
0018: 00 00 00 00 00 00 00 00   ........
0020: 00 00 00 00 00 00 00 00   ........
0028: dd 0a 01 0a               Ý...    

nbtstat -n arleady executed but not help

Please advice the solutions.
Thanks