"Workgroup" Errors A-Plenty - need instruction

Friends I have two repetitive errors routinely showing up in my System Event log.
I believe these to be Win7 networking policy errors in that it does not deal with a missing workgroup member correctly, but I could be wrong, obviously

here's one:
Log Name: System
Source: Service Control Manager
Date: 12/15/2011 6:54:11 AM
Event ID: 7036
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: Samwise-PC
Description:
The WinHTTP Web Proxy Auto-Discovery Service service entered the running state.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
<EventID Qualifiers="16384">7036</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8080000000000000</Keywords>
<TimeCreated SystemTime="2011-12-15T12:54:11.948452700Z" />
<EventRecordID>9547</EventRecordID>
<Correlation />
<Execution ProcessID="528" ThreadID="2332" />
<Channel>System</Channel>
<Computer>Samwise-PC</Computer>
<Security />
</System>
<EventData>
<Data Name="param1">WinHTTP Web Proxy Auto-Discovery Service</Data>
<Data Name="param2">running</Data>
<Binary>570069006E0048007400740070004100750074006F00500072006F00780079005300760063002F0034000000</Binary>
</EventData>
</Event>

here's another:
Log Name: System
Source: BROWSER
Date: 12/15/2011 7:05:18 AM
Event ID: 8020
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Samwise-PC
Description:
The browser was unable to promote itself to master browser. The computer that currently believes it is the master browser is unknown.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="BROWSER" />
<EventID Qualifiers="49152">8020</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2011-12-15T13:05:18.000000000Z" />
<EventRecordID>9556</EventRecordID>
<Channel>System</Channel>
<Computer>Samwise-PC</Computer>
<Security />
</System>
<EventData>
<Binary>34000000</Binary>
</EventData>
</Event>

These two errors repeat routinely.
These errors are in the log of the sub-tending member of the workgroup. The 'senior' machine is offline much of the time [windows 7 ultimate x64 on a desktop. the second system from which I am copying these errors is windows 7 Home Premium x64].

The LAN these operate on is run by a pair of bridged [via wifi] routers, thus common AP, the senior system is wired, the 'junior' is wireless. there are other devices on the network: handsets and windows xp systems etc, but only the two win7 members of the workgroup, and each is marked to share files with the other.

all help appreciated

z

I also get 4321's routinely.
security is lean: dd-wrt firewall on the routers, AVAST scanners on the pc's, windows firewall and nothing else [pc-wise - I do protect the browsers].
no MSE, no windefend. no zonealarm or other

I'm going to check the workstation and see if same errors are popping over there

kegobeer said:

8020 is a master browser error, but 7036 is just an informational message. You get 7036 in your logs because Windows is looking to see if there's a proxy being used. There's nothing wrong with that, but if you are not using a proxy, you can disable that service. That can also be a by-product of certain software applications.

8020 can be harder to troubleshoot. What kind of security software are you running?

OK, that was instructive. thought I would see same/similar on the workstation but nada. none of these errors on that one.
I think I have them both setup the same way... the idea was/is to leave a lot of the files needed on the desktop unit, share them with the mobile unit, and share media files both ways.