Vista 64bit SP2 Now No Internet on Wake Up

My internet connection is gone every time I wake the machine from sleep with the following error in the event log... worked fine in SP1... no hardware/software changes... no driver updates for the network adapter are available... it's on a netgear router which I presume is the device sending the "DHCPNACK message"

Ideas anyone ??????????????

Log Name: System
Source: Microsoft-Windows-Dhcp-Client
Date: 5/30/2009 12:48:25 PM
Event ID: 1002
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: VM-TIMB
The IP address lease for the Network Card with network address 00044B05C00E has been denied by the DHCP server (The DHCP Server sent a DHCPNACK message).
Event Xml:
<Event xmlns="";>
<Provider Name="Microsoft-Windows-Dhcp-Client" Guid="{15A7A4F8-0072-4EAB-ABAD-F98A4D666AED}" EventSourceName="Dhcp" />
<EventID Qualifiers="0">1002</EventID>
<TimeCreated SystemTime="2009-05-30T16:48:25.000Z" />
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Security />