netman.dll in svchost.exe 1356 using up CPU

I did a "repair" of Windows XP Pro and then downloaded SP3. I then noticed

my CPU's at 100% every 15 to 30 seconds for about 4 seconds.

I downloaded Process Explorer and found that it was occuring within

svchost.exe. I then went to Services and began stopping/pausing the Services

while watching the effect on the CPU usage. When I stopped Network

Connections (Netman, c:windows/system32/netman.dll), it stopped the CPU usage

spikes.

I'm worried about what this will affect by stopping this service. I do use a

wireless network when at home and file and print share. Will this be affected?

Can someone recommend a better fix or explain why this was causing CPU spikes?

Thank you!