Running Vista Ultimate 32-bit SP1

I have a MS Bluetooth Laser Mouse 8000 connected with the MS 3.0 Bluetooth
Tranceiver and ever since the SP1 upgrade, the system will periodically lock
up... I have my screen and hard drives set to turn off after 10 and 30
minutes respectively, but I DO NOT have the machine set to sleep or
hibernate...

It's an NVidia 680i motherboard and 8800GTX Graphics card (no SLI)... all
current drivers installed...

I get two "warnings" (but no "errors") in the event viewer, one on HidBth
and and one on the BTHUSB (see below)... nevertheless, the system WILL NOT
recover and I have crash it by shutting off the power... again... it only
occurs periodically...

Any thoughts on this one ??


*** EVENT LOG WARNINGS ***

Log Name: System
Source: HidBth
Date: 4/6/2008 9:43:22 AM
Event ID: 2
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: VM-TIMB
Description:
Bluetooth HID device (00:17:fa:5c:a9:c9) either went out of range or became
unresponsive.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="HidBth" />
<EventID Qualifiers="32769">2</EventID>
<Level>3</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2008-04-06T13:43:22.652Z" />
<EventRecordID>86596</EventRecordID>
<Channel>System</Channel>
<Computer>VM-TIMB</Computer>
<Security />
</System>
<EventData>
<Data>\Device\_HID0000000a</Data>
<Data>(00:17:fa:5c:a9:c9)</Data>
<Binary>00000000020028000000000002000180000000000000000000000000000000000000000000000000</Binary>
</EventData>
</Event>

Log Name: System
Source: BTHUSB
Date: 3/26/2008 6:56:37 PM
Event ID: 3
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: VM-TIMB
Description:
A command sent to the adapter has timed out. The adapter did not respond.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="BTHUSB" />
<EventID Qualifiers="32773">3</EventID>
<Level>3</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2008-03-26T22:56:37.341Z" />
<EventRecordID>84944</EventRecordID>
<Channel>System</Channel>
<Computer>VM-TIMB</Computer>
<Security />
</System>
<EventData>
<Data>
</Data>
<Binary>000017000100000000000000030005800708000000000000000000000000000000000000000000000708140C000002000000000000000010270000FFFFFFFF</Binary>
</EventData>
</Event>