DHCP/network problem

[jroot]

Greetings! I’m trying to track down some strange network problems. We intermittently lose LAN connection to some clients, not all, at random times mostly running Outlook and AutoCAD. The CAD users get “Delayed Write” errors which show up in the error logs, everyone randomly loses Outlook for 1 second which shows up in the client error logs.
SBS 2003 SP2, switched wired LAN, 2 Broadcom NICs, 3rd party web filter& firewall. Clients are all XP Pro SP3 with one laptop w/ Win7 (not joined to Domain)
When I do network diag’s at the server I get FAILED on MAC and PHY Loopback tests. Here is the ipconfig /all: (which says DHCP not enabled but the services *are* running – if I look at my network settings it says Address Type: Manually Configured)

Windows IP Configuration

Host Name . . . . . . . . . . . . : server1
Primary Dns Suffix . . . . . . . : OurServerName.local
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : Yes
DNS Suffix Search List. . . . . . : OurServerName.local

Ethernet adapter MyTeam:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : BASP Virtual Adapter
Physical Address. . . . . . . . . : 00-1E-C9-D5-CF-99
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.30
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.30

But then I do ipconfig /all on a client, it says DHCP enabled, network test on client shows a FAILED on pinging the default gateway. Internet is working fine on all clients, network connections up at 1Gig except for the occasional random hiccups.


Windows IP Configuration

Host Name . . . . . . . . . . . . : d7btn1f1
Primary Dns Suffix . . . . . . . : OurServerName.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : OurServerName.local
OurServerName.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : OurServerName.local
Description . . . . . . . . . . . : Broadcom NetXtreme 57xx Gigabit Controller
Physical Address. . . . . . . . . : 00-1D-09-0C-F0-03
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.125
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.30
DNS Servers . . . . . . . . . . . : 192.168.1.30
Primary WINS Server . . . . . . . : 192.168.1.30
Lease Obtained. . . . . . . . . . : Monday, August 16, 2010 7:59:05 AM
Lease Expires . . . . . . . . . . : Tuesday, August 24, 2010 7:59:05 AM
Any thoughts?

[Sabastiaan]

I think that the network manager in your computer is outdated and so you are facing the problems like this. If you want to ensure that then you can try to update the Network Manager in your computer and see if it resolves the problem. I am saying you to do that because I have seen many of the cases like this where updating the network manager re solve the issue and I hope that it will do the same for you.