Wireless adaptor is lost after waking from sleep (intermittent fau

Hello

I'm had this fault since I bought the notebook last September. It's been
investigated by my computer supplier who maintains that it is a a
Vista-related problem and not a hardware fault.

After waking up from sleep, the wireless adaptor doesn't work. The device
has disappeared from Device Manager, and there is an PlugPlayManager system
event logged - see details below. The only way to get the wireless adaptor
working again is to be a restart of Vista.

Does anyone have any experience of this fault and know how to cure this
problem? Thanks in advance for any help.

Log Name: System
Source: PlugPlayManager
Date: 27/01/2008 18:32:32
Event ID: 12
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Home-Laptop2
Description:
The device 'Atheros AR5007EG Wireless Network Adapter'
(PCI\VEN_168C&DEV_001C&SUBSYS_3067168C&REV_01\4&1e c4ddad&0&0020) disappeared
from the system without first being prepared for removal.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="PlugPlayManager" />
<EventID Qualifiers="49152">12</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2008-01-27T18:32:32.000Z" />
<EventRecordID>40550</EventRecordID>
<Channel>System</Channel>
<Computer>Home-Laptop2</Computer>
<Security />
</System>
<EventData>
<Data>Atheros AR5007EG Wireless Network Adapter</Data>

<Data>PCI\VEN_168C&DEV_001C&SUBSYS_3067168C&REV_01 \4&1ec4ddad&0&0020</Data>
<Binary>00000000</Binary>
</EventData>
</Event>