PC Freezing when when accessing network.

Hey Guys,

I have a problem with a particular PC slowing down dramatically as soon as it tries to access the network.

The only way to log in in a sane amount of time is to unplug the network cable, wait for the desktop to load up (usually haveing to run explore.exe myselft because its nots starting straight away) and then plug it in.

If i open up outlook, or IE for example, the pc just locks up..but as soon as i unplug it they all open fine! if the network cable is out, everything opens as expected, when it is in, it locks up!!
I have tried scanning for spyware, viruses, ive check start up items for anything suspicious, renamed the pc, tried a different network port, logged in as a different user, dissconnected network drives, and removed symantec totally for now i case that was an issue...but it wasnt.

Any ideas, because im stumped!?

Thanks in advance
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michkoConnect With a Mentor Commented:
Process Monitor will give you a detailed "under the hood" look at what processes are running, and what those processes are doing:

Or you could look at using something like Ethereal (www.ethereal.com) to monitor network traffic.

DNS.. check your DNS settings.  Are they correct?  Is your DNS server working properly?  try pinging www.yahoo.com.  How long does it take?  try pinging your server by name and then ip address.  If there is a difference, the problem is in DNS resolution.  However, your network adapter may be messed up or your network connection could be slowing it down too.  (bad cable)



Not sure if this is the same problem (but it sounds to me like it is) but we had a similiar issue, after a week of troubleshooting we replaced the NIC and its worked fine ever since. It seemed to just stop all activity (Network and CPU) every 5-10 minutes for 30 seconds.
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